Guys do you like being called Daddy when your intimate with a provider?

Interesting.. To each their own.

Calling someone "Daddy" doesn't creep me out because it is not the word I use to refer to my father.

It has D/s connotation to it for me personally because of my past. I'll admit I've asked if it was OK to call a client that during a session because between how he handled me and the spanking I asked for I was in that head space.