I have a very low sex drive and always have, and I'm actually extremely happy that way. I wouldn't change it even if I was offered the chance to do so somehow. I don't think I'm completely, 100% asexual (I usually go with
grey-a instead, though I'm still honestly not sure if I totally understand what the heck sexual attraction feels like -- as opposed to romantic and/or emotional attraction, which are definitely recognisable to me), but my husband and I met on AVEN (the Asexual Visibility and Education Network) and compared to other couples, we have very little sex and are perfectly happy that way. Even though sexual activity can be fun at times, it's not at all a huge drive for either of us and we've both agreed that if for some reason we were never able to have sex again in our lives, it wouldn't cause either of us the slightest bit of distress. Although I do understand what sexual arousal is (which is something that can happen if I'm in a situation that's already sexual in nature), I can honestly say that I don't think I've ever been what people seem to refer to as "horny" in my life. Sex just isn't a need for me in any way and I have no drive for it, even if I can still be capable of enjoying it.
TMI maybe...? My husband and I had sex twice in the past week and before that, hadn't done so in about three months. That makes three times in total this year so far and I'm totally fine with that. It quite honestly blows my mind that many people have sex multiple times a week... I'd go absolutely nuts if a partner expected that from me. :S (Of course, I realise that my husband and I are the ones in the minority, not everyone else.)