Ok, so I'm a virgin. Deal with it.
I see no problem with it, and I see no benefit to changing that before I get married. Some people say things like, "You need to test drive the car before you buy it", or, "You want to be sure she'll be satisfied with you"...
THAT DOESN'T MATTER TO ME!!!
I find more satisfaction in a relationship knowing I can communicate with the female than I do knowing that she's happy with how big my Buick is. I want someone that I can talk to, find companionship in, and be able to trust for who they are, not what they can do.
A relationship should not, in my opinion, be based on money, physical abilities, physical appearance, or sex. Sure, they all help in a relationship, the latter after marriage, but I wont determine my happiness in my marriage by how often I "get some".