It's because gambling with fiat for me, is more expensive. Another reason is that, I'm easily getting tired of waiting so I can sit for the game that I want. Unlike gambling with crypto, I'm very free to play anytime I want.
This is going to be the main answer that you see on here.
Plus the fact that:
1. Online gambling could be banned in a certain countries, crypto is a way to circumvent this.
2. You can gamble anonymously, and your CC company / family won't know (not saying if this is a good or bad thing)
3. Fees are going to be much lower.
Sorry, I don't understand. Why is fiat gambling more expensive?