Men, hands down, it's not even close!
I think that men really need to *bust a nut/polish one off/spank the monkey* every day just to function properly. Women can probably go a few days without feeling an uncontrollable urge to have an orgasm, but for most men that's virtually impossible.
The real question should be, who finds it easier to get laid? Men or women? The answer to that is one is easy too, it's women by a land slide.
It really is a cruel twist of faith if you think about it