I'm 17 now, I've always loved Pokemon, nothing's ever stopped me from buying the games, I proudly use my Pokemon Platinum wallet from the day I got it with the game, having pre-ordered it.
My girlfriend thinks I'm sad, but she thinks nothing less of me, and I don't ditch her for it (too much anyway :P).
Nahh I all seriousness, LOADS of people know I play Pokemon, it's nothing new to anybody anymore, funnily enough it's starting top become a bit trendy again! I have 20 year old friends who still play it, I think nothing less of them, unless they don't trade me a shiny, haha.
I wear my Pokewalker to College, I wear my Pokewalker when I go out. WHO CARES? It's your life at the end of the day, if somebody's going to judge you over a game, then they quite frankly need to sort their own lives out!
Not that I expect to, but I hope it's made you think.. Who're you REALLY going to lose....? THE LOSERS.