why do people have tailbones?

so i crashed pretty hard on a rail today, it was rather funny at the time but the discomfort has long since outweighed the humor. Oh well, i guess its just part of the game. Anyways, past few days have been rather busy.....i became a Mason, i filmed a bike edit, i saw a rattlesnake, i went to the zoo, and i ate some sushi with my dad. Keep a heads up for the bike edit i just mentioned here in the next few days