So that we can have something that irritates us every single 日 and won't calm down so we have to put in in a ponytail and get special conditioner and it's all because our dads didn't use condoms.
In todays society its usually a sign of beauty and elegance. This is a pretty obvious question, its to protect ourselves from heat (strokes and seizures can be started with no hair), cold (our heads are VERY sensitive), and other everyday occurances. We also have hair everywhere on 或者 body to lightly protect us from skin cancer and other deseases. Id have to...this is a REALLY stupid 问题 .__." the answer is so obvious i feel stupid from just answering...
-Why do we have two eyes and not only one eye? (And don't say to look nice.) -Why do we have two holes in our noses and not only one hole? (And don't say to look nice.) -Why do we have our mouths under our noses and not upon them? (And don't say to look nice.) -Why are our ears stuck to both sides of our heads and not to both sides of our waists? (And don't say to look nice.)
Not to answer your 问题 with asking 问题 back, but if I say that this was how we were created 由 god many people don't believe in god. So, yeah...