HK, this may be one of the reasons that parenthood as a general experience initially was such a social relief. There is enough commonality, but also enough natural variation, in the newborn parenting experience, that one can always find something to share with another parent of an infant. It's only when one's children begin to diverge from others' (and for some that happens quite early) that this again becomes a social tender spot.
It's also something I think was shielded from somewhat more than some others here were by having multiple EG/PG siblings. When others were playing with dolls, we were, too, but ours formed a parliamentary system of government we described as a constitutional patriarchy, with a figurehead religious head of state, elected executive, and elected legislature, and periodic open elections. (Unfortunately, despite universal suffrage inclusive of all species, effective democracy was subverted by the large voting bloc of dog stuffies controlled and recruited by our PG oldest sibling!)
Living with immediate family members spanning a 4+ SD range of IQ, and growing up in a close community that included a chronological peer whose assessed mental age in adolescence was about 3, helped me, I think, to learn that it is possible to find points of intersection with anyone. Knowing multiple EG/PG individuals intimately (not only my siblings, but also cousins and friends) also gave me a perspective on temperament and intensity that is able to separate personality from giftedness.
I realize that I have, on the whole, had an unusual background among other unusual backgrounds, but I mention this because I want to highlight the possibilities for gifted adulthood.
OP, we are intended to live in diverse communities, with different kinds of interdependence with each other, regardless of IQ. No one human being can be all in all to another, and when we treat others as such, we risk crushing them and ourselves with unrealistic expectations for them to meet all of our social and emotional needs. I encourage you strongly to find a professional to explore the emotional intensities that you find difficult to bear, but I also would suggest that you begin looking at your relationship with each person around you from the starting point of one small positive intersection--which may lead to more, but, even if it doesn't, is sufficient in itself.
