Is virginity that serious?

Im just really curious as to why some people hold their virginity up on a pedestal? I understand religious reasons or whatever but like whats the big deal? Its just sex and you think thats one the sacred thing your going to give someone on your wedding night blows my mind. I obvioulsy dont think you should be sleeping with a lot of people unsafely but why do some women take it so seriously. Especially if your "saving" it like its nothing to be saved- virginity is a concept.