If you've been to a con before and paid close attention to the the opening ceremonies or the con books they hand out with your badge they say or it's written, "Hey there's gonna be a lot of people packed together this weekend please shower regularly" in not so many words.
As for growing out of anime, it's not like a old tee thats too small. They've probably dropped their interest in the Japanese culture thinking it would get in the way of "growing up" or "becoming an adult" or "getting a girl/boy friend" it happens, if it's meant for them they'll get back into it, Japan isn't going anywhere just yet.
As for how many friends I have that are into anime lets just say that my first prereg group for AMA had 14 ppl and I'm working on my second group and im at 8 with more to come. And that's just my group. We're meeting up everyone else there.
