Why is there no rewards for bitcoin nodes? I tried to search and didnt find any post about it, if anyone gives me a post about this I'll erase this one, thanks.
Because Satoshi didn't think it was necessary and didn't code any method of doing so into the protocol. Still, if you really want to, you could set up a node that refuses to accept connections from any peer unless they pay some bitcoins for that privilege. What will your expesive node offer that peers can't get by ignoring you and connecting to free nodes instead?