Bitcoin is definitely a future of gambling as it give you an privacy to gamble without disclosing your identity and you don't have to share your personal details so its an blessing for people who are addicted to gambling.
And for people from a country that mark gambling as an illegal activity, bitcoin and other crypto currencies give a better solution for them. Hence, the numbers of people who will gamble using it can be significanly increased.
This is the main reason bitcoins are becoming so popular, and Bitcoin prices are going up as well. Bitcoins are becoming more and more popular in gambling and porn industries. Many countries don't allow both of them, but due to bitcoins, many people find ways to use these things more conveniently from home.