In countries where crypto is "banned" (illegal for mainstream use), do you think people will still use it? In such an scenario, it's possible on-chain criminal activity (mainly money laundering, terrorist financing, etc) will rise. To prevent detection, it's likely both criminals and average people will use a privacy-oriented coin such as Monero or Zcash. Bitcoin will be the least used cryptocurrency due to its transparent design. But I could be wrong.
What do you think? Will people still use crypto in a country where it's prohibited to do so? Or will they be afraid? What if all of the world's countries turn against crypto (which is very unlikely atm)? Will market prices go all the way to $0?
Your input will be greatly appreciated. Thanks in advance.

If this is their bread and butter or even they get lots of benefits for using crypto for sure that people will continue to use this.
But if it happens that they are not a regular crypto user and they are just here try their luck to earn then this people would possibly avoid using crypto if there's ruling that government will think about crypto is illegal and put penalties to those people who use it. Also provably common answer towards the question is depends on the benefits what people could get on crypto since this is deciding factor to them to stay or obey then quit.