I don't think so. There are a lot of people who are lucky enough in gambling wherein their life has been really changed because of gambling. At the end of the day, it's still depends on the luck of a person.
Yes, gambling can change a person's life for the better but that is only temporary, greed will be difficult to control if gamblers have considered gambling an easy way to get quick money, meaning too underestimated. But I believe there are still people out there who are able to live happily from gambling by managing profits and press losses well.