I'm not a gambler and I personally find gambling morally questionable and intellectually embarrassing, but golly I'm tired of sports gambling being pointed in a sort of "see, freedom doesn't work!" sort of way.
1% of people will ruin their lives no matter what society does to prevent it. If you have a gambling problem (if it even appeals to you), I would as a _friend_, recommend you seek help; but as your fellow citizen? Up to you.