I havn't wanted to play it earlier as I don't really enjoy most RPGs, but this made me want to give it a try.
I'm not 30 though, so I can't comment on that part. But having played mainly PC games from the age of 5 until now (from time to time) at the age of 26, I don't see any signs of that changing. The games I play have changed slightly, yes. I play more "just for the fun of it" now, so I'm not as picky about the genre.
I used to hate playing sports games on consoles, but when you're older and only playing after work/when there is time and thus are playing for _relaxation and the new experience then such concerns don't take the same priority I've found.