Nope, never felt like that.
I've never been anything but independent. Wouldn't dream of being any other way. I work when I want, IF I want, see who I wish to see and when I wish to see them and most of all kept all the money to myself.
Working for an agency or a brothel would be my worst nightmare. I like and need to talk to clients before I agree to see them. Like most indi workers I don't see everyone who wants a booking. I only ever saw guys I felt were suitable. The telephone connection is my main vetting and if I pick up on ANYTHING I will not meet the guy.
My safety and security is paramount to me and I'm not going to take someone/anyone else's word for that especially when all they are thinking about is the money that is going to be going into their purses/wallets.
Putting up with a few tossers in the day is a small price to pay.