It sucks to be a bike messenger in Philly. Between fax machines, email, text, scanners and just about every other piece of technology you'd think you wouldn't need them. But we do. As I yute, my brother and I tried to get my mom's(insert joke here) company to have a bike messenger between three different offices. That was circa 1989. It never happened. Fast forward to today and we have a courier in our office. He's in his 70's and drives an old convertable Mercedes. He's a cool dude. I use him from time to time. With 140 agents and another 30-40 staff members, he always seems to have something keeping him busy.
I can see how in a major city it would be much easier to get around via bike vs. car. With that said keep fighting the fight. Eventually you'll win. Or maybe you'll lose. Someone has to.