I've been growing my beard for a year now.
Thats great, I have a really long one myself, I think that people usually only young adult males are able to grow beards. It would be weird seeing a baby grow a beard. 
Yes, also a woman!
Indeed, actually back in ancient caveman times it was a common trait for humans to have hair on their face and entire body like the hair you see on gorillas.
I guess it kept them warm.
It sure did, for most of that time it was eventually lost over time and humans became more hairless and they depended more of the fur coats of animals for warmth. 
So they pretty much evolved to have less hair. How interesting.
vellus hair covers almost the entire area of the human body. Exceptions include the lips; the backs of the ears; the palms of hands; the soles of the feet; certain external genital areas; the navel; and scar tissue. The density of hair – i.e. the number of hair follicles per unit area of skin – varies from person to person. In many cases, areas on the human body that contain vellus hair will begin to produce darker and thicker body hair, such as the first growth of
Beard
A beard is the unshaven hair that grows on the chin, upper lip, cheeks and neck of humans and some non-human animals. In humans, usually only pubescent or adult males are able to grow beards. Some women with hirsutism, a hormonal condition of excessive hairiness, may develop a beard.
Throughout the course of history, societal attitudes toward male beards have varied widely depending on factors such as prevailing cultural-religious traditions and the current era's fashion trends. Some religions (such as Islam