10: Yes, I drive by a mattress store every week, never saw a sale.
9: We evolved from a common ancestor, apes are our "cousins"
8: Because people are as curious as stupid
7: Because they scare us and used to be less friendly and more protective then mothers
6: Whales are that big to survive the huge pressure of the depth they swim at
5: They crawl in, die, and remain
4: Ever tried to duck from a bullet?
3: Because we have a small short term memory, and we're bored and have no short term memory
2: Where else are they to get money? It's a interest on a debt you have with that bank.
1: I have no fucking idea, my guess is that Tarzan is the son of a weird genetic manipulator who altered his sperm to grow a child who is muscular, limber and completely clean shaven.