There are gamblers who gamble with common sense they are not addicted to the gambling and therefore they are not trouble some for the families and friends.
It is only those gamblers who are addicted , become annoying for their families, use excessive money and even their mood and their way of life becomes extremely disturbed cause of the gambling addiction.
I agree with your opinion, that a gambler will not become an addict if he is aware of all the risks when playing, if he plays too much, puts money in the hope of winning, of course that is impossible, on the contrary he will lose. all the money will be lost. And that will cause problems in his family and the problem in him is that he will regret having done that without thinking about other people.