More intelligent people are more likely to see the limits of physical reality and suffer as a consequence. Only normies can be comfortable with the world because they cannot conceive of the infinite nor do they crave it. This is why all the great minds in history were all miserable, because everything this life has to offer is too limited.
BTW, this incidentally is related to the suffering of inceldom, because out of all worldly experiences, sexuality and union are the closest to the infinite. Incels are acutely aware of the limits of worldly experiences more than anyone because being deprived of the highest one, they have to content only with things of a lower kind exclusively which makes their limited nature even more obvious so that inceldom is essentially a kind of existential cul-de-sac. You want to taste something that is genuinely absolute but you are stuck only with relative and finite "copes", which can only be a temporary distraction, they simply cannot be milked indefinitely and at some point the absolute and the infinite must be tasted, if even briefly, to get the kind of existential respite necessary to become appeased with the world again. Normies have that in the form of sexual union. Those on the religious path, if i may interject my own beliefs for a second, are able to compensate by trying to connect with the source of the infinite itself (hence why i believe celibacy is only truly possible in a religious context, since you are giving up something fundamental and getting something analogous or higher in return). Incels however are stuck in what is really an existential prison.