Being 18 and a virgin is perfectly normal. I lost my virginity on my 19th birthday and never felt weird about it.
In terms of whether it's attractive or unattractive it depends. Some guys are uncomfortable taking a girl's virginity if they aren't in love with her, others seek it out for either good or bad reasons.
Either way, you are a virgin so I wouldn't worry about whether it's attractive or not. I would just date guys until you find one that you want to have sex with - and there you go.
It can be something to cherish or dread depending on your point of view. Attractive? Probably not unless one values virginity. But some, particularly guys, seem to like the idea of "conquering" a virgin. I don't know why. I've never been with one. I guess I'm one of those whom it never had much meaning.