There are many reasons users do not like KYC. Some users want to be anonymous to avoid things such as taxes. Some other reasons may include underage, gambling illegal in their area, or hacker using stolen funds.

I'm sure there are other legit reasons but none that I can think of.

I do want to make a point about gambling not available in certain areas though. I feel like it's our money, we should be able to use it however the fuck we want. Unfortunately, governents do not agree with that. They want their piece. I think if all sites were able to kyc their customers and send tax documents, then most countries would allow us to gamble.