Virginity Is Weird

The status of virginity strikes me as odd. It's this label that humans put upon our selves and only has two versions. You either are or you aren't. There's no real gray area and it seems to be a state of mind more than a physical condition. Do people make too much of an issue about virginity? Does it really change the person in a significant way as they switch from one side to the other?
There are divisions we humans use to distinguish ourself from one another that have "real" physical basis. Skin color and race are easily seen and are often used to link us with people of a similar genetic heritage and separate us from those who do not share that same heritage. However, there is a gray area with genes because we can mix them to create something in between. You can't mix a virgin and a non-virgin (is there a better word/term for people who have had sex?) together to make a half virgin. Both participants come away non-virgins (NVs for now) and the offspring is a virgin. Even the biggest and most prolific division we humans recognize, that of sex, can have gray area. There are people born who are of ambiguous or undetermined sex, or display attributes of both. The only gray area I can see for virginity comes from personal definition. That is, how far does one have to go to qualify universally as an NV? One end of the spectrum I think universally terminates at intercourse between penis and vagina. However some might say if you engage in oral sex that you are an NV. And what about women who have only had sex with women? What is the criteria for a purely lesbian NV? Maybe the line is at manual or oral sex for them. That's why I say virginity is more of a state of mind. You have to decide for yourself, based on your on criteria, whether you have transitioned from virgin to NV.
Why is sex such a huge experience that we have a special word for people who have not participated yet? Is it because it has potential to make new humans? Is it because it feels so much better than any other pleasure? Traveling outside your home country can be a fun and pleasurable experience and by no means has everyone done it, but we have no special word for that. Why are sex and virginity so different from other exclusive activities?
Does one become a different person once they've had sex? Is it so life-changing that it deserves special status and a special word? Being a virgin, I can't say for sure myself, but maybe some nice NVs can enlighten me.
As far as I can see, it's just something humans have made up, but I don't know exactly why. I think about these questions when I ask myself, "If I die a virgin, have I missed out on something truly amazing?" From what I can tell, not really. This leads me to have the neutral position that I possess regarding my own virginity. I'd like to have sex, and probably will at some point, but it's not that important to me that I need to change my status as soon as possible.

I feel like I just wrote a short essay. Does anyone else have something to say regarding the things I brought up or answers to the questions that I asked?