My wife really enjoys it and either asks, goes for it, or will do it if I ask. I wouldn't call that addiction, which has a negative connotation anyway.
A woman with whom I was previously involved was perhaps even a little more into it...she would heap lavish praise on "Max" (her pet name for it) and seemed to prefer giving head to anything else. She surprisingly was not at all into receiving oral attention...outright refused to let me go down on her.
On the other end of the spectrum another woman would not put her mouth anywhere near my genitals. Everything else was fair game, and she claimed she would "eventually" do it, but I learned she was a bunny-boiling nut bag and ran from that hot mess as fast as possible.