IMO gambling is destructive, but it isn't necessarily so destructive that it creates a cycle of destruction. I think doing gambling is fine, but not selling the dopamine hit of gambling. Similar views on drugs. I don't condemn a person for using them, unless they're causing a problem for someone dependent on them. They move a lot easier than casinos, so making them illegal is a different deal than making casinos illegal. If the prostitution is fully consensual, then its no different than the less remarkable addiction to sex - all parties are better off without the addiction, but you do you.
But its never fully consensual. We have the luxury of making up these "what ifs" because it's not in our face. Its all over some countries and its clearly exploitative. What we've done wrong in the past is punishing the women while the pimp goes free. If they want to freely sell a service because they've seen the prices they can get, no problem, supply and demand, then the price falls and its not a great career option anymore. But get the pimps. Exploitation is inexcusable. Make their life hell.
The problem with that "antinatalism," if I get your meaning, is they go for kids. You mean gays, right? I couldn't care less what people do if its consensual, but why do they have to indoctrinate kids? Yes, that's evil. Give them the same treatment as the pimps.
But none of these things come close to the destruction caused by debt with interest.
"The love of money is surely the root of all evil." 2 timothy 6:10 if memory serves. Watch it be wrong... Lol. Love is equivalent with "increase." Symbolic language. The increase of money is the root of all evil. Very efficient wording.