Since fiat betting is not legal in my country, I prefer crypto betting as an alternative. They allow me to place bets without going through traditional banking systems, which can be restrictive or monitored. Additionally, many crypto betting sites offer wider variety of games.
Whatever is convenient I think one would chose it still. Even when there is KYC documents to be submitted.
But if you are here in crypto for a long time, you would already prefer to play on crypto casinos since you are always accustomed to using it than the fiat base casinos.
Fiat betting is legal in my country and our ewallets are also allowed to bet on casino games. I eventually give in to playing on local casinos because its also convenient. It doesn't require me to do anything else but bet and win instant local currency.