Sub-santiy

It occurred to me today that Manhattan is Sub-Crazy.  On the Eastern half of Manhattan, I counted 5 Subways.  Thats not including the Western half, although I'm not sure if there are any.  In addition to that there are 2 Quiznos, a Mr.Goodcents, a JimmyJohns, Subs n' Such, and a Planet Sub.  Seriously, how many sub places can a small town support?  I guess its a lot, and we must eat a lot of subs.  I prefer the tuna.