Truth is, after thinking about it, I was talking about myself. I too am in my own box, as you are, but on a much smaller scale it seems. The conclusion I came to (of it not interfering with life so much) may not necessarily apply to you.
I also feel the pain of not fitting perfectly in anywhere, as alluded to above, and sympathize with you. There may be a part of this that is only in our consecutive heads, however. I’m a believer of people seeing what they are expecting to see. True, there is probably an actual lack of belonging, but i don’t think it’s as bad as you’re telling yourself (and I’m telling myself).