I'm not a Muslim, But I think one of the fasting traits and reasons is to feel how indigent people live and deal with hunger that you mentioned.
About the user-base age range, I guess most of the active users that first joined were a teenage and so young, (from 14 to 17) I guess but now they've got older. Including myself. When I first joined I was 15, now I'm 19. I think that also applies to others.
BTW, If you were a Dota player I could join you. Not a LoL fan.