If a tree falls in the woods, and no one is around to hear it, did it fall?
If your the only one at work, did you work? Are you going to optimize to others view of your work habits or are you going to optimize to outcomes?
And I am an introvert.
That's entirely fair. You work best in a particular sort of arrangement, just as others work best in other sorts of arrangements. Nobody is wrong here.
When I socialize with friends typically 1h is enough.
I don't "collect" friends. I only get close to people when it makes sense. I am not socially inept however, just selective
IMO, it's not shy vs open, as my wife is on the shy side but clearly extroverted, while I'm more visibly/apparently comfortable but I find it exhausting to be in groups for a long period of time.