It's like life on earth now, except no one sins. People don't go whoring after false Gods. They don't steal from each other or hate each other or covet or break any of the Ten Commandments. The children don't get together and pick on one kid and beat that kid up after school.
Sin is what holds us back. In the new earth, people will all be one with God and live forever and nothing will hold them back from their pure ambitions:
Isaiah 65:21 And they shall build houses, and inhabit [them]; and they shall plant vineyards, and eat the fruit of them.
65:22 They shall not build, and another inhabit; they shall not plant, and another eat: for as the days of a tree [are] the days of my people, and mine elect shall long enjoy the work of their hands.
65:23 They shall not labour in vain, nor bring forth for trouble; for they [are] the seed of the blessed of the LORD, and their offspring with them.
65:24 And it shall come to pass, that before they call, I will answer; and while they are yet speaking, I will hear.
65:25 The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust [shall be] the serpent's meat. They shall not hurt nor destroy in all my holy mountain, saith the LORD.
QUOTE
There, immortal minds will contemplate with never-failing delight the wonders of creative power, the mysteries of redeeming love. There will be no cruel, deceiving foe to tempt to forgetfulness of God. Every faculty will be developed, every capacity increased. The acquirement of knowledge will not weary the mind or exhaust the energies. There the grandest enterprises may be carried forward, the loftiest aspirations reached, the highest ambitions realized; and still there will arise new heights to surmount, new wonders to admire, new truths to comprehend, fresh objects to call forth the powers of mind and soul and body. {GC 677.2}
All the treasures of the universe will be open to the study of God's redeemed. Unfettered by mortality, they wing their tireless flight to worlds afar--worlds that thrilled with sorrow at the spectacle of human woe and rang with songs of gladness at the tidings of a ransomed soul. With unutterable delight the children of earth enter into the joy and the wisdom of unfallen beings. They share the treasures of knowledge and understanding gained through ages upon ages in contemplation of God's handiwork. With undimmed vision they gaze upon the glory of creation--suns and stars and systems, all in their appointed order circling the throne of Deity. Upon all things, from the least to the greatest, the Creator's name is written, and in all are the riches of His power displayed. {GC 677.3}
And the years of eternity, as they roll, will bring richer and still more glorious revelations of God and of Christ. As knowledge is progressive, so will love, reverence, and happiness increase. The more men learn of God, the greater will be their admiration of His character. As Jesus opens before them the riches of redemption and the amazing achievements in the great controversy with Satan, the hearts of the ransomed thrill with more fervent devotion, and with more rapturous joy they sweep the harps of gold; and ten thousand times ten thousand and thousands of thousands of voices unite to swell the mighty chorus of praise. {GC 678.1}
"And every creature which is in heaven, and on the earth, and under the earth, and such as are in the sea, and all that are in them, heard I saying, Blessing, and honor, and glory, and power, be unto Him that sitteth upon the throne, and unto the Lamb for ever and ever." Revelation 5:13. {GC 678.2}
The great controversy is ended. Sin and sinners are no more. The entire universe is clean. One pulse of harmony and gladness beats through the vast creation. From Him who created all, flow life and light and gladness, throughout the realms of illimitable space. From the minutest atom to the greatest world, all things, animate and inanimate, in their unshadowed beauty and perfect joy, declare that God is love. {GC 678.3}
I will talk to the prophets and saints and study God's computers and all His technology and will explore the universe with my friends and study all the organisms and learn to play every instrument and take up surfing for awhile and then rock climbing and study metallurgy and just keep on learning new things and experiencing new things and meeting new people forever.
It will never get boring.
That's God's original plan for mankind, just as if Eve had never decided to join Satan by eating the forbidden fruit. A 70 year life span is not what God intended for mankind. That's not nearly long enough.
There will also not be people suffering torment throughout all eternity. How horrible is such a thought. They will all be destroyed.
John 3:16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
Malachi 4:1 For, behold, the day cometh, that shall burn as an oven; and all the proud, yea, and all that do wickedly, shall be stubble: and the day that cometh shall burn them up, saith the LORD of hosts, that it shall leave them neither root nor branch.
Matt. 10:26 ..fear him which is able to destroy both soul and body in hell.
Matt. 13:30 Gather ye together first the tares, and bind them in bundles to burn them
Jude 1:7 ..Sodom and Gomorrha, ... are set forth for an example, suffering the vengeance of eternal fire.
Matt. 3:12 Whose fan [is] in his hand, and he will thoroughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire .
Jer 17:27 But if ye will not hearken unto me to hallow the sabbath day, and not to bear a burden, even entering in at the gates of Jerusalem on the sabbath day; then will I kindle a fire in the gates thereof, and it shall devour the palaces of Jerusalem, and it shall not be quenched.
Ez 20:47 ...Behold, I will kindle a fire in thee, and it shall devour every green tree in thee, and every dry tree: the flaming flame shall not be quenched, and all faces from the south to the north shall be burned therein.
Heb 12:29 For our God [is] a consuming fire.
Num 16:45 Get you up from among this congregation, that I may consume them as in a moment
Ex 33:5 Ye [are] a stiffnecked people: I will come up into the midst of thee in a moment, and consume thee:
2 Thes. 1:9 Who shall be punished with everlasting destruction from the presence of the Lord, and from the glory of his power;
Rev 20:9 ..and fire came down from God out of heaven, and devoured them.
Obadiah 1:16 ...they shall be as though they had not been.