Much seconded, it's awesome how many different types of pokemon there are. And after your finally done catching em all, you can try to collect all the shinies, or all the events etc.Wow, this thread is sad... XD
I play it simply because it's FUN. It's exactly the kind of game that I love-- travel around and explore, catch / discover hundreds of different species of Pokemon
Do not question, just enjoy.
I play pokemon because honestly, it is one of the best RPGs around. And as "kiddish" as society makes it seem, it is still a very well developed game. Plus its fun.