Think about it, when you buy a car, do you want a new one or a used one? What guy or girl wants to marry a person that has been around with other people, with who knows what diseases, to be the mother or father of their children? Not only is it a sin to have sex before marriage, you are risking unplanned babies and diseases and doubt of being faithful in a marriage. You are taking a gamble.
I never worried about it. To my knowledge I've never been with a virgin.
Not all the time, lol
I would think some would want girls with some experience.