I need to know. (Not that I wanna buy drugs). I'm doing a personal survey.
1. Bitcoin isn't anonymous.
- What happens when you need legitimate Fiat? You have to cash it out but where...? On an exchange and a lot more of them are requiring personal information to verify who you are.
2. Why would anyone potentially want to accept something so volatile inherently in nature?
I don't know if you are just foolish, high, drunk, or just don't know what is going on in general.

The only way to convert Bitcoin into fiat anonymously would be to meet with someone in a place where there are no cameras in the area in exchange of physical cash, but this is idiotic since you are just assuming that he didn't hire anyone to record you from the distance. So in essence.. it's impossible to 100% be sure that you can exchange BTC to fiat anonymously.