Unlikable

We are introverts. We love our space. We joke about not wanting to go out and be around others, but how many of you struggle with a total inability to form any close relationships whatsoever? How many of us live with the knowledge that something is most definitely wrong with us but we don't seek treatment?

Being isolated is something I've struggled with all my life. Ive tried not to care. I've done my best not to let it consume me, but I have tried to fix it. The problem is that I can't see the problem. I know something is wrong, but it's like an astronomer looking looking for a black hole. How do you find something that can't be seen?

Books tell you to avoid obvious social rudeness, but that's not my problem. I don't have enemies, it's just that humanity is an alien race I can never quite connect to no matter what I try. I live in a world of chilly, polite strangers.

Im 40 now, and I think I'm finally accepting it. I've expended enough pain on this.

I'm not asking for advice. I just wonder who else out there is going through this, and I'm interested in hearing your experiences.

Edit: Thank you all for your thoughtful (and thought-provoking) replies. Im sorry others feel the way I do, but at the same time, it's comforting to know I'm not really unique.

I also want to clarify that I don't believe it's wrong to be us (INFJs/Introverts). In most aspects, I wish more people were like us - conscientious, quiet, appreciative of beauty, high empathy, etc. When I said something is wrong with me, I wasn't generalizing any of you or other INFJs - I'm only expressing frustration at my personal failure to make meaningful connections even after putting effort into it.