The fixed "scene" has a lot of quirks it would seem. Riding brakeless is one of the silliest of these quirks.
Brakeless bikes belong on the track. I rode my fixed without brakes for a while, it was idiotic. Thus as an idiot, I'm probly not qualified to say this but, you are irresponsible if you ride brakeless on the roads. Many people say riding brakeless gives you a better connection with the bike and improves you handling and perceptive abilities, it probly does, but if you really desire this sort of development, ride the track in a group, that should provide very well for increasing your cycling skills.
At least most of these people riding brakeless, skidding every 10 metres, run silly gear ratio's such that they can barely get over 12mph.