Usui Ayumi like question

This is a thing that I've noticed but ignored up until now. I started reading Manga since I was in middle school. So my mental sexual maturity had sprouted since young. The problem I have surrounding that is if it's normal to not feel any sense of sexual gratification from real life sex senses.

I must also mention that I did explore porn sites since younger also. Probably around the same time I started reading Manga. But I have never found actual real life people porn stimulating. Compared to reading novels that describe the action or Manga that gives you a panel by panel portrayal, real life sex has never been anything appealing. To the point where even a simple scenario of exchanging lips and saliva with a significant other in real life fills me with boredom and disgust. Not that I've ever dated or experienced what people call "love," anyway.

I'm at an age where I see my fellow university peers finding love and whatnot. But that desire alludes me. Is that a common feeling amongst some people? Or is this feeling just me having a form of a lack of emotional and sexual empathy, ie, mental issues?

Usui Ayumi answered question about being single
was obsessed with Usui Takumi and imagined him to be my daddy thus came up with this name. Lol me being delulu.