Yes of course people never gamble for fun but they gamble to make money out of it, and the number of gambling addiction is increasing due to the spread of gambling ads on various social media. Most of the people are confident that they will earn a lot of money by gambling and get rich easily but these get rich schemes make them poor. And those who make such plans are very difficult to stop from gambling because they always pay attention to it which is why they never want to stop, but few people gamble just for fun.
Nowadays, the most addictive reason for newbies is the spreading of advertisements on various social medias, which attracts people by showing attractive promises. And when new gamblers go in believing these enticing assurances, they end up losing more money than they intended to make. Gradually a user gets more into gambling and becomes addicted but later if he loses his money he does not want to come back from it but greed works inside him. That's why I think gambling is never for fun but it's best to stay away from it otherwise it will become an addiction at some point and you will lose money all the time.
I don't think adverts alone is the reason many people are gambling rather the stories of people winning millions. Personally, I know how many times I have taken breaks from gambling but as soon as someone have a significant win, my interest is rejuvenated and I will begin gambling again. In addition, most persons are out of job and so due to survival they keep gambling and hoping to make mega money through gambling. I have a friend who always tell me that if he gets a job he will stop gambling that his lack of job is the only reason he gambles. I believe these are some of factors for the increase in gambling activities in our current reality.
The above also justify why most gamblers don't believe that the purpose for gambling is for entertainment. To them, if you must gamble, then you must have it in mind that you want to increase your finance. Well, I don't have to blame such gambler for their thought. When you consider that most of these gamblers are jobless you will understand why they cannot see gambling as a source of fun but rather as a means to an end.