Professor Richard of the University of California has practiced oncology for over 30 years; he has an MD and JD. Recently interviewed, he graciously said that many years ago, humans had very dark skin abundant in melanocytes, which shield them against the UV radiation of the sun that can cause skin cancer; therefore, they did not get skin cancer for over 100,000 years of living naked in the savannas of Africa.
The beauty of having hair is that you can do a lot of styles with it that others cannot do. The splendor even gets better since you can have specific styles to suit different occasions and dress codes. But when you lose it, you realize just how limited you are towards such. Worse still is if this happens prematurely in your 20s and 30s. At a time when your peers are out looking cool with their hair, you cannot do much about it.