For some people maybe yes, but for others it’s not. Who would work hard just to lose at the end of the day? A life like that would be tiring, you work only to lose it to gambling. In the end you’re just making casinos richer while making your own life miserable.
If you have that kind of mindset, I don’t think it’s normal for a responsible person. Maybe these people should be checked, because they might not commit crimes now, but in the future they could if they get too addicted. Gambling should only be seen as entertainment. If you work just to gamble, then you’re treating it like a responsibility or a basic need, which is already wrong.