Lucky you, most of the people who do gambling because they think they can make money jist like you do from gambling is now broke, or maybe do have so many debts because of gambling addiction. It is not bad to try gambling in the first place, what bad is, is that you already lose something the first try you did, and not realizing that gambling is not for you is the one that is wrong in the very beginning.
Well then indeed lucky, Like @daringdiscovered said not all players can have the same fortune like you. Most likely those gamblers who did make gambling as their source of income tend to be eaten by their own system, in which they have no total control over their gambling habits. It's indeed not bad to gamble since it is built for fun and entertainment as I said before. A lot of bad gamblers are the one to blame for making bad images of gambling. As they have no total control of their greediness, they tend to do stuff that is beyond their imagination. That can harm himself and people surrounds him/her.