Why do women try to hide the fact that they're sluts?

And want us men to respect them for their achievements not attributed to their physical form?
I bring this up because in the very limited amount of free time that I have I took a look at a website called okcupid.com. I got there because I googled "personality test" in Hebrew. Anyhow, turns out this website has some wildly popular test which sorts people out according to their dating personalities. So I took the test - without thinking at all before answering - and, well, uh, see for yourself:

The Last Man on Earth Random Brutal Sex Dreamer (RBSD) FACT: The apocalypse has come. All are dead. You never should've asked her out. Shit, rejected again. You are The Last Man on Earth. Sorry, but most women would rather see the human species wither to an end—and therefore deny the most fundamental instinct that living creatures have—than sleep with you. We've learned the following: you don't think things through. You're haphazard. You're dangerous. You're somewhat inexperienced. It's totally obvious that you're a horny bugger, as well. Everybody knows that and steers clear. To top things off, when you do find your way into a relationship, you tend to be a dick somewhere down the line and fuck it all up. There's a small, but negligible, chance we're wrong. In any case, your friends find your shit hilarious. There's nothing cooler than a dude reducing himself to human rubble. ch. Always avoid: The Sonnet (DGLD) Consider: Half-Cocked (RBSD), The Nymph (DBSD Your exact male opposite: The Gentleman Deliberate Gentle Love Master

You can take the test too here.
I guess what I'm trying to say is that a bunch of these girls on the website go on and on about how they're so great and the 18th century philosophers they read and the obscure movies they like and want you to beg them to answer your messages and to tell them how you're scared because they might be too sophisticated for you when all they really want is intimate relations with a man but noooo, until you'll reach that stratosphere you may as well randomly ask a girl off the street if you can buy her ice cream. Worked for me. Actually it didnt. But thats because I've never tried. I dont get out much. But I'm sure if I did I would be money.