If Pokemon were real, I'd go out of my way to catch a few to be my friends. You know, stay at home, be pampered and **** like that. If I was going to get into proper battling (eg: if gyms and the league also became real), I'd catch only the Pokemon I intend to use, and while I'd really like to say I'd treat them well (like my friends at home), I'd probably be very critical and not "mean" exactly, but I'd yell at them and push them to be the best they can be.
Alternately, if contests were installed in place of gyms, I'd go right back to being a super supportive and caring trainer. While I'd still care about winning, I don't see contests as being quite as important as proper battling, so I'd be a lot more casual.
Another day successfully wasted. "I need a new quote for this signature." - Me