Let's think different. In general terms gambling is not totally right, but in fact according to other people says gambling is fine till you are not hurting anyone, or your getting addicted into it. but for me gambling is not really good to become a habit, even you do this for fun or entertainment it is wrong. Gambling is wrong for some, but not all.
It's not totally right but it's not totally wrong too. It depends on the perspective of the person that gambles. If a gambler sees good result with gambling and it's happening to him very often, there's nothing wrong with it. But making it as a main source of income is going to give you a very wrong decision but if you can take the risk, it's up to you.
It may be a personal opinion to think whether gambling is right or wrong but gambling is illegal in many countries and people think gambling will make a negative impact on people's family.
Gambling is like any other fun game when it is played within the limits and when you are not addicted to it.