Hmm, I think it's likely he was in a fairly active gambling environment, and his return to gambling is likely due to his inability to resist the temptations of his environment, leading him to relapse.
You say something that hits the nail on the head completely , because what makes people return to a dangerous activity is because it seduces them and they find it attractive, which becomes a temptation where if there is not enough strength they can fall again and those relapses are the ones that should be avoided the most, there is no need to think about it too much , those things if they know that they hurt us should be avoided no matter how pleasant it may seem to Play in the casino, an addicted person after being addicted, the fact of playing must know how to Manage their Emotions.
I was smoking more than 20 years and stopped it. I thought that it would be very difficult to be near smokers, but i have no problems with it. I easily can stand near when they are smoking without dreaming about cigarette.
But it was my decision to stop. I couldn`t stop when my family, my doctor, my employer asked me. I stopped smoking when i told myself "that`s enough".
The same is with gambling. If you stop due to somebodys` request - you feel, that you lose something. Until you don`t decide that you don`t need gambling - you will think about it and think how to return.