Okay, are men seriously that over-protective of their daughters, or are you all exaggerating in order to make us laugh? It's a little alarming to hear how many dads want to lock their daughters up and never let her anywhere near a guy until she's way beyond puberty... do you really all feel that way?
I grew up with an extremely over-protective mother (she was very scared about the prospect of me losing my virginity, starting at 14--not that she had to worry, I was 24
)... but my dad was really quite chill about the whole thing. Or at least, that's what he led me to believe. I never imagined fathers as being the ones to freak out about their daughter's virginity or whatever... at least not in this day and age. I know you all feel like, "I don't want her near a guy, because I remember what I was like at that age," but seriously... would you really let that fear get in the way of your daughter growing up and having intimate experiences? And do you really think that your daughter doesn't have the same desires that those boys do?
I guess what bothers me is the assumption that daughters are "sugar and spice and everything nice" for their daddies, while boys are assumed to be out for one thing only, and that girls would never think about rebelling. Bit of a pedestal, isn't it? Why not accept that your daughter is normal and will have human feelings and desires, just like your sons might, and that neither should be repressed/policed?
(This is not to say that you shouldn't educate your children about safe sex, risks, etc... but just to accept both genders as being sexually equal, and that girls have just as much curiosity about sex as boys do.)