I think Lindsey is the only lady who has replied, so I'll go next; I've been meaning to add my two cents anyway.
Okay, I'll start. I love going down on a woman.
This attitude will ensure you eat more pussy. I have been with men who loved it, and men who didn't, but would do it anyway. The men who loved it did it often; those who didn't, did not simply because it was not enjoyable for either party. I have always felt more comfortable receiving oral sex from men who love it. From past experiences, and talking to ladies, I have concluded that having this attitude increases confidence, and ladies tend to be much more sexually adventurous in the long run, for those of you who like that.
I have also been on the giving side (not anytime recently) and can say I preferred eating pussy to sucking dick. Women tend to be bitchy though, and I couldn't imagine spending a considerable amount of time with one, so I like men.
Some ladies dislike it. Some could care less. Some would sit there all day and get off a dozen times. Nobody needs to bare their soul, a simple "I like it" will suffice, if you would prefer to not elaborate, fine.
Some ladies dislike it because of personal preference (perhaps they have had a bad experience?), and some because it can be awkward having someone's head between your legs. I imagine it would be a little different for ladies like that if it weren't for the sexual oppression in America that shapes silly societal standards. As a young person, it generally takes a while to get over that.
Personally, I like it, IF it's good. Some guys think just being down there is enough, and don't understand there are certain techniques to make one cum. If it's bad, it quickly gets boring. Men who give great oral sex can be hard to give up. There is a BIG difference between feeling good, and feeling good enough to achieve orgasm. This is where communication comes in to play. Some ladies are shy about communicating this sort of thing, but seriously, as a man, how are you supposed to know what feels good unless she tells you? If you are a lady, and you want good oral sex, for Pete's sake, talk to him.
The reasons can be more important than the likes and dislikes. Techniques. Overkill. Toys?
Techniques? I probably can't go into this without disturbing people with way TMI. It all boils down to communication, as mentioned earlier.