How are most women comfortable with penetration?

Throwaway account for obvious reasons. I am 20 years old and I tried my first penetration yesterday by myself. I took it slow, I was calm and I was lubed, so those factors are definitely not the issue. Also, I was very well aroused.

It did not feel good, it did not feel like anything except a burning sensation. I didn’t put it in violently or took it too fast.

What also annoyed me was the fact that I got it in at max 3 inches and a width of 1.5 inches. It wouldn’t go in past that.

So my real question is, how is everyone so comfortable taking dicks? How are people just having sex left and right, even girls way younger than me are doing it?

If I ever want to have sex one day with a man I’m gonna be forced to buy 50 dollars dilators if I want to actually make it work. Imagine having to spend 50 dollars to do a thing you don’t even like.

Is it just me or is this common and it’s just that no one talks about it? I mean everyone takes dicks like it’s a sport! What shocks me is seeing women shorter than me at like 4”10 doing it with whole 6”5 men while I struggle to take 2 fingers.

I really wish I wasn’t a woman.