That's a good question Theo!
From my point of view, using Bitcoin to deposit at an online casino is safer than dollar itself!
Also, if you like cash in your paypal that is no big deal. Just get your coins into Bitcoin, Etherem, Bitcoin Cash, or Litecoin and sell them for USD at Gdax then transfer that to you Coinbase for free, you got cash in your Paypal. After you do that a few times you will get tired of the back and forth and forget you have a paypal. It makes you sad when you sale your BTC for $8000/BTC and 2 days later they are worth $20,000/BTC. Then you want some bitcoin and you realize your USD can buy less the half of what you had a few days ago.
The thing is that, bitcoin or cryptocurrency in general has the decentralized nature which reduces the authority control and guarantees the value and safety. Dollar can be printed anytime but it does not work the same way for bitcoin. Relying on blockchain technology is much better than those FED liars.
Bitcoins and cryptocurrencies have a good future
This is a universal currency that does not require conversion. Current gambling trends lead to the fact that the cryptocurrency will soon take the main places in the Internet payments. Including in gambling
There are many bitcoin casinos, nevertheless, that don't possess licenses. This is a risk to your personal data, if the website has any of it. It might be a good idea not to convert winnings from bitcoin gambling into your local currency if it's illegal to gamble online in your country