I think it has way too high a potential for addiction and ruining peoples lives. Especially since most gamblers are senior citizens, casinos honestly just seem like abuse. I don't support gambling at all.
Unless it's found that gambling has the same addictive tendencies as some hard drugs, where your body immediately latches on, it's unrealistic to baby people by saying they can't participate and be responsible for managing their own money. People make stupid choices. Welcome to literally every aspect of life ever, which you will never be able to sufficiently bubble-wrap to prevent people from getting into trouble. Everything from caffeine to video games has addictive potential, there just needs to be awareness of when it becomes a problem and family members need to step in to get help for someone who has a problem.
I've never gambled and don't know what any of the policies are, but any problems would be in the details of how it's handled rather than gambling itself.