It can be also useful for social contacts. I recently rode the bus in a small american city I was visiting. The main users were teens and old people. The old pe

It can be also useful for social contacts. I recently rode the bus in a small american city I was visiting. The main users were teens and old people. The old people mostly knew each other and chatted pleasantly during the whole ride. Given that won't work that well in a large city, but even then it's still better to be under people than sitting alone in your car.