1) Because of the people who did this to the Don't Walk sign in Thompkins Square Park.
2) Because I see Morgan Spurlock carrying his own laundry in the morning.
3) Because of the cute boys hanging out at the junkfood store on Avenue A and 7th street last night around 10:30 who were also buying fries just like me. All four of you rock. Especially the guy behind the counter who said, "All day I wash the potato, I cut the potato, I fry the potato," and then gave me twice as many fries as normal (and normally you already get a buttload which brings me to reason #4).
4) Because of the junk food store on Avenue A and 7th street.