Actually, Heaven is not human only. Heaven is a newly regenerated universe with a new Earth full of all the glorious creatures that first appeared in the Garden of Eden. Non-carnivorous creatures I might add.
This is standard Biblical teaching.
As for getting tired of it. What makes you think that the Creator of the Universe is not capable of making things infinitely interesting? Take a look at the size of just the part we know about! And our job is to help govern the whole thing.
"No eye has seen, no ear has heard, no heart has imagined, what God has prepared for those who love Him.”