Mostly because people live in fear. I ride motorcycles, motorscooters, and bicycles. Everyone tells me I'm nuts or how many bad drivers they're. I ask those same people are you a bad driver and they say no. I've been rear ended once on my motorcycle and I've been carless since 2005. Weak minds, too much TV. When you ride a bicycle for awhile you get the endorphin rush, you feel great everyday and have time with nature. You also don't get sick as much. People like being on the Automobile debt cycle of car payments, maintenance, and being broke. The safest form a transportation in commuting is the bus and rail.