Oral Sex ~ Giving Vs. Receiving

To all the ladies out there, what is your preference?

My boyfriend and I have been together for a while now, but sex is something that is kind of new to us and has only been happening for a few months now. Personally, I love receiving oral. I just sit back and relax while he does the work and I get the orgasm. Yes, it can be selfish to always receive, but he enjoys doing it for me. I have never performed oral and honestly, it sounds downright disgusting. I do not want to be putting my mouth down there and touching what comes out of what is down there. Lol Does anyone understand me? The question is... who else refuses to give oral? Does it gross you out? Do you know how I feel? Blehh!! Is this a maturity issue or will I always feel this way?

Thank you for your advice in advance.