Riding a bike in general isn't that difficult. Riding a bike in a city is jut madness.

- Pedestrians standing in the street to see if their buses are coming
- Potholes
- Cars making right hand turns
- Overly cautious riders
- On coming left hand turners
- Buses
- Taxis
- Any delivery trucks
- Reckless and unpredictable riders
- Weather
- Aggression
- The idea that you can stop a bike on a dime

An ideal city ride is one where traffic is really backed up, that way I can ride in a pretty solid and predictable traffic pattern with rows of giant machines "protecting" a side of me from other giant machines.