I'll join the crowd. Bicycles are relatively maintenance intensive compared to a car and the basic reason is that we are asking a 18 lb machine to carry our 180 lb bodies so every lb of the machine is burdened with the stresses of 10 lb of load. Compare that to a 3500 lb car carrying us in which each lb of machine is burdened with 0.05 lbs. The bicycle is 200x more stressed.
If we were willing to ride 50 lb bicycles (enclosed gears or enclosed chains, suspension front/rear, 50mm wide tires on big rims, etc.), bicycle maintenance could be reduced to a fraction of what we do now.
- Mark