Hairs and Nails represent the inconscient atavistic elements in humans. They have an evolutionary necessity in animals but in human beings they are simply an extension of the animal body type. That is why there is in it a very strong genetic hereditary element. There were a number of very close disciples of Sri Aurobindo namely Nolini da, Nirod da, Amal Kiran who lost hairs whereas others like Champaklal ji, Dyuman bhai kept their hairs for relatively long.
As to Rishi Munis, it is difficult to say what their hairs were like. But Sri Aurobindo’s hairs and skin colour changed after few years of intensive tapasya. But that is a unique instance as it was the action of the Supramental Force upon his body. More than preventing hairloss, many of his hairs did take a golden hue. But that is a special rare phenomenon.
As to what men like or do not like is of little importance. There is no universally accepted norm about it. But one thing one can say that being worried about hair loss is not only a stupid thing but also only compounds the loss. If someone is attracted by the colour and extent of the hair then it is better and safer to stay away from such a person. Those obsessed with the body seldom see the soul.
Affectionately,
Alok da
