Why is gambling considered taboo and immoral in some cultures and countries, yet when someone wins a large prize, his success is often celebrated and his wealth is welcomed by friends, family, and society—the same people who were against him in the beginning 
Well, I'm not generalizing, but that's the reality...
OP: No, but yes...

Actually, what is the point here you Topic in relation to the betting board, we cannot fall into gray areas of discussion on the subject that concerns us, betting (gambling).
In any case, it is your point of view, and perhaps you measure yourself by your environment, one has to have convictions regardless of the interest or the brilliance at convenience.
In recent days (another thread off topic on betting topicboard) a person admitted that he was ashamed that his pastor found out that he was betting, something really "childish", as in this case, that being an interested person prevails over your principles, is there a gray area or not, if you are like that you are a slacker who takes advantage of people, clearly.
Fortunately my close and social environment accepts me as I am and the interest in helping others is not accompanied by monetary interest.