[mitul_45]

The bikes are not very expensive, you can buy them second hand for about 100-150 EUR. And what do you have to maintain in a simple bike? Just adjust air pressure every couple of month and that's all.

Owning a car in Amsterdam is crazy expensive due to parking. For example, the parking costs at my office is about 500 EUR/month (only to park during workdays between 7AM-7PM)

[Mirioron]

Oil the chain, change and check the breakpads, check for rust on components, check tires for pressure, check break cables and probably much more.