I'm not a big fan of the one night stand for any reason other than it takes me some time to get comfortable being naked around a partner. I have major trust issus so for me to be able to relax and enjoy myself I need time and emotional connection.
There should be an "Other" option. I've "technically" had one-night stands because I slept with a girl in front of my boyfriend who I never did anything with again and another thing I'm not going to mention that didn't involve, like, penetration or anything. ANYWAY. So, yeah. I kind of have but I don't really count them as that because I was (and am) in a committed relationship and they were just for fun WITH my boyfriend. I'm not sure if I'd do it again. He and I want a three-way, possibly, one day so maybe.
I really think there should be an "other" option. I've never had a one-night-stand, and I don't think I ever will. Not because it's gross, but simply because I just don't feel comfortable being physically intimate with someone until I've known them for a while.
I had an unintentional one-night-stand once. The guy made me think he was romantically interested in me to get what he wanted- me, in his bed. I gave in and we had sex, and he immediately informed me that he wasn't "in the right place" for a relationship, and just wanted to be friends with benefits.
I just didn't enjoy the experience. I can't get into sex without some sort of relationship, some form of commitment. Sure, some people love no-strings-attached sex, but I'm not one of them.