Welcome aboard, MechanicMewtwo! I remember you from the first movie xD
Ahh I got into Pokemon when I was 8 as well, and I am 22 now. :) I plan to play Pokemon for many more years to come because well, it's so much fun and it's been there with you ever since it started. I'm really excited for Pokemon XY to come out soon, are you?
Oh, and you're never too late in joining PC at all! The community is always open for you to join and leave as you please, but you should probably stick around because we have lots and lots of discussions in store for you. Take a brief look in any of the sections we have here, from generation-based sections, as well as off-topic sections that allow you to get to know other members. You'll love it here, really! :D
I hope to see you around the forums. It's a fun place to be. :) Don't be shy to shoot me a message, or ask questions to any staff member in bold colors, and well, have fun!