Well, TTBB covered the negative pretty well, describign why some women may not like giving blow jobs, or be scared of it. So I will concentrate on the positives!
I absolutely LOVE to take my man's cock in my mouth. I love the way it feels sliding over my lips and tongue, and pushing deep into my throat. It is a huge turn-on for me to suck and lick him; hardly anything makes me hotter. As time has passed and we have gotten to know each other better, I have come to love all the stages of it, from when he is nearly flaccid to when he cums in my mouth. I love all of it.
I enjoy taking him into my mouth when he is flaccid or nearly so because it feels very different, and I love the fact that I can easily get ALL of his cock into my mouth (nearly impossible when he is fully engorged). Feeling his cock swell and harden as I suck and tease him is literally thrilling. But usually he is fairly hard by the time we get to oral, and I love that too. The silky smoothness of his hard glans feels particularly wonderful sliding over my lips.
It's a big compliment when he's hard and wants to be in my mouth. When he gets there, I can feel him instantly get larger, harder, and hotter when he slips over my lips and inside. That always arouses me! It is a feedback loop -- he gets harder and more insistent, and I get wetter and hornier. TTBB is right, it is a very intimate act.
Taste and smell play a big roll in oral sex. I love his taste and his odor, but then we are extremely well matched. There have been men in my past that I did not enjoy nearly as much, somehow their taste and smell were not as attractive to me. It is very primal and powerful stuff. With the right man, the taste of his skin and precum and cum are all marvelous. But it is a package deal -- if I was not so attracted to all of him, from personality to every aspect of his body, I might not like it as much. I think how much I enjoy the taste of his cum is linked to how much I enjoy him, and his pleasure, and how much it feeds my own.
Trust plays a big roll in oral. From the female perspective, a lady knows that she probably loosk a bit silly with her mouth in a big "O", and kneeling can smack of a form of submission that may not always appeal. Also, a woman needs to trust her man that he will not thrust too deep in her mouth and make her gag or choke against her will. It takes time for a couple to learn how to please each other this way, and both partners have to be sensitive here. I have come to love it when my man thrusts into my mouth, but it took a while for me to be comfortable with that. Him too -- I think he was nervous about hurting me or turning me off. But we figured out together how to make it work for both of us. What fun!
I probably think about sucking my guy's cock a dozen times a day. I am sure that think about it more than almost any other aspect of sex. Between the physical pleasures and thrill of it, and the emotional satisfaction that I feel when we do it, giving him oral is very high on my list of the wonderful things one can do with a man!