>>31130912I thought the consensus was that your player character in the Pokemon games is just so unfathomably loving and caring toward his/her Pokemon that they become inseparable like right away, and the bond only strengthens as you walk around with them in the over-world.
The only way to make a Pokemon hate you is if you deliberately faint it and force feed it that bitter healthy herb crap, and even that takes a while.
It's an unspoken rule but it would explain a lot.