Gambling can be a hobby, as long as that is not only your hobby. Most times we are engaged with work due to a lot of commitment that we are into. This is why most people don't enjoy doing what they love to do for fun most times.
Gambling as a hobby ain't all bad. Sure, most folks nowadays work themselves to death and got no time for hobbies that bring them joy. But unwinding after work by placing a few wagers here and there can be a fine way to let off steam, long as thats not the only way you get your jollies. I mean any hobby done to excess can turn from fun to destructive right quick. Moderation in all things, I always say.
It becomes dangerous when that person that gambling is his hobby do not have a job, and always have a lot of free time to gamble. That person will become addicted, and this is where it becomes worst. In every activity that is addictive self control is what matters alot
A steady income don't automatically lead to responsible gambling. There's tons of people who blow their paychecks at the casino after a long week. You got it right - self-control is key. Although, with a little luck, you can bypass the whole job thing altogether! (Just kidding... mostly.)