I go to Vegas quite often, and I have no problem with adults gambling. But what always bothers me is the parents who bring their kids along with them.
Maybe they think that a vacation in a Vegas casino is like a vacation in Disneyland and see no problems pushing strollers around the slot machines, roulette wheels, crap tables, ..., but children don't belong there.
My parents and I used to go there when I was in my early and mid-teens, and I had a great time. What’s the problem with that?