Humanity 2.0

 I will put my law within them, and I will write it on their hearts . . . 

   - From Jeremiah 31

Why would a loving God just let us continue forever in sin, evil, and death?

Exactly. 

But the people that ask such questions always tend to be the last to welcome this opportunity to rid the earth of evil. (By the way . . . why are they always only concerned about evil in the world, without ever mentioning death at the end of all lives as the true problem?)

They don't want God's law written on their hearts. They don't want to be changed. If they're the cause of evil in the world (even a little bit) they don't want to know it. They don't even consider it. They are incapable of thinking about it. 

Their solution to the world's problems is "Somebody take care of it. Somebody that's not me. Because I am as I am and I will never change."

Right.

God gives us the chance to change, and to be the people that, if we're truly honest and truly caring, we actually want to be. Don't you want to become immortal? Don't you want to have perfect control over your thoughts and words? Why is there resistance to this?

God's solution is something like an upgrade. We are still who we always are, but better. We still laugh and love. Except that we will live forever and we won't go around making others miserable. 

Jeremiah got this. The "crying prophet," whose life was awash in sadness - probably to the point of clinical depression - had to rejoice in thinking about God's plan to upgrade creation. 

And that means, all of us.