It's been noted that Less Wrong is incredibly male. I have no idea whether this represents an actual gender differential in desire for epistemic rationality, but if it does, it means most male Less Wrongers should not expect to wind up dating rationalists. Does this mean that it is necessary for us to embrace less than accurate beliefs about, eg, our own desirability, that of our partner, various inherently confused concepts of romantic fate, or whatever supernatural beliefs our partners wish do defend? Does this mean it is necessary to make the world more rational, simply so that we can live in it?
"We commonly speak of the sex 'drive', as if it, like hunger, must be satisfied, or a person will die. Yet there is no evidence that celibacy is in any way damaging to one's health, and it is clear that many celibates lead long, happy lives. Celibacy should be recognised as a valid alternative sexual lifestyle, although probably not everyone is suited to it." -J. S. Hyde, Understanding Human Sexuality, 1986
People differ. All I'm trying to say is this: telling someone something is a necessary precondition for their leading a meaningful life, when that is not the case, is likely to create needless suffering.