When Hoover Dam was being built Boulder City was biult as a city to house the workers and families. The founding fathers didn't want the men "wasting their hard earned money" on gambling so it was outlawed in Boulder City.
That reminds me of the scene in "Traffic" in which the drug czar from
the United States is asking a general in Mexico what policies Mexico
has for treating drug addicts. He just tells him that when an addict
overdoses and dies, there's one less to worry about. That's so much
more healthy for society as a whole than prohibition, which attempts
to keep those who can't survive on their own alive, much like a body
which retains its waste products. Those who, but for laws against it,
would lose their money gambling should lose it.