"guys prefer a clean shaved fanny"
Do they really? All guys?! Are you sure about that? 
Perhaps the ones you know, but not my DP for a start. He actually said, when we got together "don't feel you need to shave your legs for me, I really don't mind if you do or you don't." (He didn't mention fanjo as he knew already that it was unshaved!)
In my younger days I was slim, pretty and fairly promiscuous (as were most people I knew!). I've had possibly more than my fair share of casual partners, and 5 significant relationships. I have only once had a comment about my unshavedness (and I lost respect for the person as a result). Not shaving certainly never harmed my sex life!
If you want to do it because you prefer it and are in denial about how you've been manipulated by the media and your peers to think this is the norm then fine.
But because you think guys prefer it? Give me a break! What kind of backwards Neanderthals are you sleeping with?! Kick them out of bed and find a real man who appreciates you!!