What do you learn about a person when they tell you when they lost their virginity?

Why is asking someone when they lost their virginity such a popular question? I mean, when I was younger I always wondered, especially when I started hanging out with someone new. But what did I think I would learn?

Does it say something about a person’s morals or religious beliefs? Their social skills? How fast they grew up? Are we comparing ourselves? If so, do you want your interlocutor to have lost it sooner or later than you?

So why did (do) you ask the question? What do you learn about them when you hear the answer (other than the age)? What does the age of loss of virginity mean to you?