Wow, I'm pretty surprised by some of the posters who say that they would think something was wrong, or would even be turned off if their mate wasn't hard. I rarely get hard when I'm having sex and I think that there are a couple of reasons for it:
1) I get extremely intense (all pleasurable) sensations from getting fucked. My mind focuses on my ass, and my ass alone. I also think about pleasing my partner, but my cock rarely comes into my thought process. Part of that is because the sensations I get from being stimulated from the inside are so much more intense and longer lasting than the ones I get from having my cock touched.
2) The second reason ties directly to the first, but it is much more scientific. When being erotically stimulated, blood rushes to engorge the anus, and that is why the area becomes so much more sensitive during sex. The more blood, the more intense the feelings are, and vice versa. If I am really getting pounded, the blood that would go to my cock goes to the back door instead. It would be a shame to lose some of that pleasure because my partner wanted the visual stimulation of seeing my dick get hard.
Everyone has heard the saying that every woman's body is different; well every guy's ass is different too. You should never assume that because your guy isn't erect he isn't loving what you're doing to him. There have been dozens of times where I have been literally drooling from sex, but my cock has been as soft as can be. It just so happens that my ass is as red as a tomato.
TOTALLY AGREE!! BEST RESPONSE SO FAR!!
I'm a bottom. Love it!! For me, there's only pain during the initial penetration. After about the 2nd or 3rd entry, I relax and get used to the size and feel of the guy's dick. By then, I'm willing and ready for whatever-- slow & easy, fast & furious, slam-dunk rough. It doesn't matter-- I enjoy every which way: doggie, sideways, missionary, cowboy, on the floor or the stairs, on a chair or a sofa, or pressed up against a window.
I'm soft all the time, but I can't imagine any of my top partners thinking I wasn't enjoying the sex. I moan. I scream. I grab onto furniture and beg the guy to do me harder, deeper, faster... and still I'm soft the entire time.
In fact, if I got hard during anal sex it would dull the sensation. And if I were to cum, then the anal sex would have to stop-- b/c there'd be no more pleasure for me. I climax after anal sex-- usually with him doing nipple play on me and a good hand job.
When I look at porn, it doesn't matter to me if the bottom is erect or not. I can tell if he's enjoying the sex by how he's reacting to the penetration-- because I KNOW WHAT IT FEELS LIKE!! It's so hot to watch a man lose his inhibitions and truly enjoy being a bottom. I hate to see a bottom ruin a good fuck scene by not showing any emotion at all.
It takes a REAL MAN to be a good bottom, otherwise being just a top and a man is so redundant.