What about those who didn't have multiple partners but then grow dissatisfied because they didn't get the chance to find what pleases them the most?
The grass is always greener...for both women who have multiple partners before marriage and for women who are virgins until married.
I don't believe a woman should wait if she doesn't want to, but I don't believe people should sleep with anyone all willy nilly because I feel there are consequences. I see both sides because I've been on both sides.
You ask how a person could develop loyalty and appreciation after having different experiences? Well, after you experience what is out there and you find someone that is perfect for you, it just makes you appreciate him even more.