It is true gambling would be one of the main attraction of Bitcoin .
Crypto currency is the best for gambling sonce it have anonymity gamblers wouldn't worry about their identity while gambling specially for those who doesn't want their friends or family to know that they are gambling.
And for me the best crypto casino right now is
Stake since it have all of the games and it have so many give aways or challenge for us gamblers.
Gambling was famous when there was no bitcoin. Its just that bitcoin and crypto currencies has made gambling a lot more easier to play and give us the option to play without disclosing our identity or use of credit cards.