Exactly, how can you wasted tour money for fun, I don't see the logic in it but people are doing it. I'm better off donating to charity or playing physical games outside with friends and that will be more entertaining than loosing my bitcoins.
The fun in gambling includes having to bet money on the line for an unknown end result. You hope to get a positive result and that's why gambling most of the time gives thrill and excitement to people playing it. We can't deny the fact that gambling is a great way to entertain yourself though for a lot of people it's more than that. Gambling is life and they're willing to live with the consequences that it entails