I disagree with you about the forum becoming more boring without casinos. It will force users to explore and advertise trusted bitcoin tools. There are countless creative trusted tools out there that don't have signature campaigns going. There's some guy with a HYK (Hide your Keys) Avatar and idk if its a campaign or not, but you get what I mean. No casinos =/= boring.
If you define "interest" is the discussion or conversation without looking at the traffic, then you're correct banning casinos will not make the forum boring. You can expect the forum will be like this board
Serious discussion.
If I were in my fifties and was theymos know the forum funds are over 1,000,000 I may consider ending the forum .
I don't understand why we need to end the forum, it can still grow, especially there are many institutions trying to adopt Bitcoin.