When I was younger, I would have said "of course men have higher sex drive than women." But as I've gotten older I've decided that it's not so much that men have a higher sex drive, it's just a more wide spread sex drive.
For example, when I was in college, I wanted to fuck constantly, as long as the girl was attractive, I was into it. I noticed that women I was dating in college could easily match my sex drive on a daily basis, they just wanted to only have sex with me.
Flash forward a number of years, and I'm in that boat now. For a while I actually thought my sex drive was diminishing, but I've realized it's just more fine tuned. I still want to fuck whenever I can, but I have more of a fine tuned idea of what turns me on. It used to just be the thought of breasts or a pussy, but now that I've experienced all that I have, I have learned what really turns me on.
I feel that many women are just like this naturally. They are just as horny as we are, they are just more selective on what turns them on. Maybe? I dunno, women are interesting puzzles haha.