when you said "those conditions on earth that humans can eventually have" can you explain what you mean by this please? I think you are talking about when Jesus returns and gathers up all of His creation and we will finally live in the new earth and God will dwell here with us for eternity, just like God intended life to be for us when He put adam and eve in the garden of eden before their fall. Well at least when I think of heaven that is what I think about and look forward to. Is that what you mean also?
Or do you mean that you think it possible for us to live that way right now, that it is obtainable now in our current state of the world?
You may have missed the whole point of the Bible. It tells us of the original purpose for the earth and humans, and it was for mankind to live on this beautiful planet forever & for us to take care of the earth and everything in it.
"This is what Jehovah has said, the Creator of the heavens, the Former of the earth, the One who firmly established it, who did not create it simply for nothing, who
formed it to be inhabited..." (Isaiah 45:18)
"God blessed them and God said to them: 'Be fruitful and become many and fill the earth and subdue it..." (Genesis 1:28)
"And Jehovah God proceeded to take the man and settle him in the garden of Eden to cultivate it and to take care of it." (Genesis 2:15)
Why do you think God made this wonderful physical Earth and put humans on it if he didn't want us to live here forever? Why do you think his plans changed? I don't believe that he did change his plans! Jesus came to give us our perfect lives back, (which Adam lost for the human race) and because of what he did, we can look forward to living on this planet forever.
God and Jesus will not literally come down to this earth and live here. How preposterous! Imagine---the maker of the
sun and all the galaxies actually living on this earth! How can you maintain such a ridiculous line of thought? Clearly the so-called destruction of the earth that Peter seemingly talked about
has another meaning, that the earth will be regenerated and cleaned up, and Jesus himself will reign OVER the earth. In Revelation 21 God "comes down" in the sense that his attention is focused on the earth, and he aims to guide his people in their endeavors, through the offices of his Son and the New Jerusalem (Jesus' co-rulers).
We can't have the lives NOW that we were intended to have, because we are still under the influence of Satan and his rulership of the world (I John 5:19), but the Bible tells us that Jesus will soon set up his own government over the earth and THEN we will be able to live in peace, with healthy, perfect bodies. (See Isaiah 9:6,7; Daniel 2:44; Job 33:25.)