I think oral sex is a good thing if both parties enjoy it. I enjoy giving my spouse oral sex, even though there isn't much pleasure on my side. I think it is the act of giving pleasure to someone you love brings intimacy.

On the other side I have never been able to finish with oral sex alone. I'm taking it as a good thing, but I don't know how to give fellatio and I can't tell her how to do it any better. It feels good, and I enjoy it, but she gets frustrated that she can't make me finish and eventually her jaw hurts. Sex feels a lot better.