Casinos don't dominate the economy.

Casinos haven't wasted the bulk of a generation's top talent to enrich a small number of pederasts in a tiny geographic area.

My view of "morals" laws is that harm reduction should be the policy. Do I like gambling or drug abuse? Of course not. Do I think they should be illegal? Probably not, because empirical evidence shows that harm is better reduced by making these things legal and then regulating them.

Of course, if I found that casinos were having huge negative externalities, then my opinion would change.