If you put brakes on you won't be a hip hipster, and then your retro New Balance shoes and levis rolled to have cuffs and your wallet chain and your tattoos will be for naught because your bike will give away that you're just a poseur.

In all seriousness riding in the track without brakes is one thing, but riding in the streets is a whole other. I think the brakeless rigs are for either the extremely skilled or the overly bold or the true poseur. Why would you not?