When I was in school, waaay back when Pokemon first came out, I was about 14 and Pokemon were cool. Everyone was actually into.
So no one made of eachother.
And now that I am 26, I have friends who loves playing games,whether it's xbox, playstation or PC, we're all into different types of game.
Im the one who's into Pokemon. And they don't make fun of me.
My advice to deal with it will be : everyone of us is unique, we have our own hobbies and interests. Ours is Pokemon. It's not childish or for kiddies. It's an interest.
The haters should deal with it.