Gambling is not legal in many countries. Cryptocurrencies provide anonymity and thus it is convenient for many people to use it. At the same time cryptos like doge coins and tron are very cheap, using them to gamble does not burn the pockets. Gambling website that accepts crypto do not need KYC which means you are completely anonymous.
Exactly. Gambling is illegal in many countries which makes anonymity quite important in my opinion.
Way more convenient is another reason as well. Easy and quick to exchange from this currency to another already make my life easier when gambling online.