I've known a few women who were obsessive about cleaning and I didn't like it. I'd rather go down on a pussy that tastes and smells of something.
There are also lube issues. I had one girlfriend who used to clean herself very thoroughly with the shower head then come to bed demanding to be fucked with no foreplay (I guess she'd got it from the shower head?) this was very painful until I learned the trick of pulling my foreskin forward and using it as 'lube'. Basically, I'd pull my foreskin as far forward as possible until most of it was beyond the end of my cock, in my fist, hold this against her un-lubed cunt and push. As my foreskin slid back most of my cock would enter her even though my foreskin and the dry outer few inches of her pussy were kind of 'stuck'.
It was a weird feeling, made fucking feel like wanking as my cock was moving inside the foreskin while her tight pussy gripped it. I can't imaging it felt great for her but she invariably lubed up after a minute or two and would always gasp when her juices kicked in and I could finally slide all the way into her...
Actually, I started this saying it was a bad thing but now I come to recall what it led to, it was kind of fun. Way off topic though.