Im going to go out on a limb and say that most men want to be attractive for the sake of women's attention. If your satisfaction by being attractive is solely for your own gain and nobody elses, this doesnt apply to you.

If your sole application for being attractive is to attract women, then using a 1-10 scale to rate yourself is a waste of time at best and self delusion at worst.

Attractiveness is the gateway for access into the dating world. Men have the onus of doing most of the approaching, unless you're already attractive, in which case you may get unsolicited attention from women. If you're not getting approached by women, you arent attractive enough for it to make a difference. Therefore men should rate themselves as a 1 or a 0, 1 being attractive and 0 being unattractive.

This is an important distinction because men give themselves the benefit od the doubt, even if it doesnt serve them. They might say they're a 5 or a 6 when that rating might as well be a 1, since being nothing but stellar gets a womans attention. Because women have higher levels of disgust, a man trying to make himself not face harsh realities will be worse off for it.