Is it better to avoid addiction in the first place by completely devoiding yourself of doing that activity instead of playing and getting addicted only to try and recover afterwards?
Prevention is always better than a cure for anything that relates to addiction, but that doesn't mean that you will need to avoid playing in casinos.
Prevention in gambling is all about avoiding situations that will lead you to spend more than you can afford to lose, which will result in chasing your losses.
If you're not someone who cannot sustain or do not have the means to play in casinos, then don’t do it until you have the means to do it, and if the time comes that you already have the means, then be a responsible gambler to avoid the worst part of getting addicted, because the cure is not easy.