I once came across an article where it was stated that over 60 percent of most crypto transaction were used for betting. I don't see anything wrong with that. But don't you think it portrays crypto in a bad way?
Gambling is not just using cryptocurrency as a bet but also with fiat, but the Government doesn't consider it as a bad thing as long as they will provide the legal documents making their gambling business legal, the only difference about online gambling that uses cryptocurrency is that they do not submit such thing to Governments, they are making it freely to gain profits by using this digital money we called cryptocurrency.
And it is not a bad thing or a good thing, it is either of the two depends on who's going to look at it and judge it.
Gambling has been there in every market for centuries and same is happening with crypto. People gamble with everything that has worth such as gold, properties etc. since crypto currencies are the future and they have tendency of increasing in value over some time, people have started using them for gambling. Another reason for playing gambling online is that it does not reveal your identity.