OH, YOU'RE MY BEST FRIEND

The internet is a strange place. I have been known to frequent a message board full of assholes. Yet they seem to be unified in Pokemon.
People who would tear a well-meaning poster unaware of the social norms of the board to SHREDS will suddenly turn to each other in kindness and offer rare Kanto and Johto starters while asking for nothing in return.
What is it about Pokemon that could turn such cold hearted bastards into kind and caring trainers?

Slight update: I asked them for their thoughts on Froslass, and one response was "on my list of ghosts i want to fuck"
I felt I should share.