The fun side of gambling is winning. Losing is no fun. Gambling is a form of entertainment because it lets you passes your time or lets gou waste your time in playing that's why the fun thing has been said.

yeah I would feel happy when winning, especially when I made a small bet with a big win, it was really fun

Nobody wants to lose money!

Not really... In my opinion(and I'm sure that many more will agree with me too), losing is never fun. And since you will always lose in the long run, gambling should not be fun at all to a rational person, but rather interestingly, it is fun to most people.

I guess it's the thrill that makes you feel happy. The thrill of losing, most of the times. But the potential of winning also makes it addictive and fun.

the fun part of the gamble is won a lot of money to spend a little money. victory to be celebrated and it is the most beautiful and happy moment. I spend time with my family when I get big profits from this game.

it depends what you do/gamble

I personally never do anything except poker hold 'em.
Never against the house

fun in that? adrenaline rush, winning money

If i define fun in gambling in my own words it will be what you might think it not be.
Loosing and winning is the fun in gambling.  It is not about the thrill, it is about how the game affects your personality even in the good and bad decisions that you make.  Entertainment is about fun and enjoyment.  If you keep on winning that would be more than fun.  And if you keep on loosing,well, that makes you funny.  One thing is that if you wanna gamble and bring a frown on your face making you miserable in every loses that you make then you are not having fun.  Try to find other means to have yourself entertained with. 

There are alot of fun in gambling.Gambling is a great source of entertainment and source of spare money also.Gambling specially bitcoin gambling is fun because of many games you can play while gambling at the same time.And fun thing about gambling is when you win alot of money and at the same time you lose,you get more angry and want to recover your lose.You'll enjoy gambling just play safe.

at the end casino will win...

If you always win that was fun, but if you always lose in gambling thats worst. Always careful in playing gamble games