because i'm sick of messing with cars, because almost everything i need is within a 5 mile radius, because i've always wanted one, but didn't know they made something besides a chicken motor until 6 months ago, because i love making stuff that no one else has, or if they have one, i like making mine better than theirs, and because i like the feeling of impending death when i'm riding in traffic on a 70 year old bicycle at 45mph...
oh, and because i'm unemployed, and would be sitting at the bar all day if i didn't have a "hobby."