gambling is really risky in my opinion though it has some advantages such as a possibility to earn money and earn experience
Well at least you got that right being "really risky" lol
There is no advantages in gambling even if you was to earn some pennies one day another day it would be given back. Experience in gambling is not a good thing.
The only advantage I see is if you actually have fun gambling an amount which you can afford and not doing it for financial gain.