I don't think it has anything to do with purity. My thoughts are that is more about ego and control. Men don't like to be compared, if a woman has had more than one partner they feel insecure. The control part stems from the fact that most women have a very special place for their first sexual partner. You can draw you on conclusions on that one.

In psycology there is something called the madonna/whore complex...I was merely saying I dont agree with the type of man who wants a girl to be a virgin but he would never conside it for himself...like he should experiment with different partners but these women he beds are not worth marrying...that he saves for a special girl who would never do that, what he has been doing...the double standard. is thatokay to you? and what of those girls who he had sex with were they not worthy of a marriage proposal...even though they may have hung round in the relationship with a guy...in case he was an open minded sort who would one day propose to (silly me)
sexual experimantation on the part of all sexes should be either a right for all or not good for anyone... or how about switching things around TO: NOW you guys stay virgins and we will play around and treat you like rubbish if you do it before marriage.
see what I am sayin?
equality baby!