I've heard it said that philosophers as a demographic are overwhelmingly single (in the unmarried sense). I don't know if this is true, but if it is, could it be because love and reason conflict? For example, if your lover has a habit of losing valuable items, locking him/herself out of the house, etc., practical reason forces you to confront them with suggestions implying "you ought to be better - I'm telling you how you should be better", a suggestion which is often infuriating to someone who's supposed to be in an equal relationship with you. Love, on the other hand, urges you to look with forgiveness and even humor on your significant other's faults. Given these consequences, if you're agreed that love and reason pull us in these separate directions, shouldn't humanity focus on love and forgo reason?