Have always been a fan of oral sex since I was introduced to it during my time in the navy Now that I am occasionally smitten with ED due to diabetes, it is sometimes the only way I can orgasm with a partner, so I thank goodness I enjoy it so much.
The other side of the coin if you will, is that I really enjoy performing oral sex on my partners and the obvious enjoyment they get from it, if they are into it.
I have come across only a few ladies who didn't enjoy it. Some in my earlier days perhaps because of my lack of expertise. Or maybe some were like @Denise and her husband and couldn't get over the hygienic aspect of it. It was something I never pushed if they weren't in to it, other than asking them to at least try it once. Some tried and didn't like it, and that was fair enough. There were one or two others who did say afterwards " I didn't realize what I was missing" π
There were even one or two who enjoyed giving, but not receiving. Always felt a little bit selfish knowing the pleasure I was getting, but not being able to return the favour.
This was just going to be a short answer. Got a bit carried away (As you do with things you enjoy. π )
I can enjoy oral sex for extended periods, whether giving or receiving.