Alcohol is definitely regulated and fast food is too a broad term to mean anything.
But yeah, gambling should also be heavily regulated (as alcohol) and it is far from a "little pleasure", it can easily become an addition even without throwing around ads, free first bets and gamification.
>>xandri+(OP)
Regulating gambling is a good idea, but most people here seem to be talking about forbidding. I find that odd, compare it with the general opinion here about soft drugs, there HN seems to be pro-legalization.