I seen a few polls on how often you have sex, but none on how often you want it..
As often as I can get it!
I am currently single, and am not a big hookup fiend. So I can usually go for a few weeks, before I really start craving it again. I obviously need to orgasm more frequently than that, but I'm more than happy to provide that orgasm for myself, most of the time. When I need sex is when I get "touch-starved" and I need to touch and be touched. The orgasm is just a nice bonus. It's all about the full body contact. Also making out is fun.
Usually several times a day... but that doesn't mean I'll get it that often. Hah
i think about it all day long, especially when i have to be away for work, at home id like to have it a couple times a day, but we usually only end up having sex 2-3 times a week....its just hard find time for it between work, household chores and kids
Once a day, before bedtime if I had my way. Luckily I have a hitachi for that, because it's pretty impractical to try and jump my poor partner every night. (He works at 4am and I'm on second shift-ish).