Following idea came to my mind. When I see person gambling, at first I would try to evaluate how he looks to tell what kind of person is in front of me. If he is dressed well, looks well-groomed or presentable, then probably that person earn enough to have spare money that he can dedicate to gambling. What else except "Well done mate" can I say? Probably everything is fine with life for that person. But if gambler looks unpresentable, dirty clothes, bad smell, looks tired (has pouches under the eyes), probably drunk, then except "it is your choice to live your life" I can say nothing.