50 BTC is very much mate. Most people lose only and that is very bad. I hope that more people will realize that.
But not everyone does and that is very bad. But you can of course gamble. But dont play that much that you will become poor.
Gambling is not a way to make people become rich, it is just using your money to enjoy something, and get fun with that. So no matter how much they have gambled, they always enjoy it.
Actually I never calculated how much I have gambled, but I guess its only around 5
BTC