Humans live on the this planet along with other animals.
Yes, I like this version a little more.
This essay is full of wisdom. I really like it, despite the errors. I'll help with a discussion about "comfortness."
You don't ever need to write comfortness. It is better to write comfort. If you end something in ness it makes it a noun, but comfort is already a noun.
Here are examples:
I like this car because of its comfort.
I like the feeling of comfort.
Adjective: The smell of incense is comforting.