Bicycle lanes in many cities are close to unusable.
For example:
- they are right next to parked cars and you can't ride on them without constant fear of getting doored
- they abruptly stop and there is no obvious place where to continue riding
- cars park on the bicycle lanes
- bicycle lanes go right next to crowded bus stops and there are so many people that it's impossible to ride
- crossings are designed in such a way that you need to wait for three (!) traffic lights to cross a single road, leading to a waiting time of at least 3 minutes
There are only a handful of roads with usable bicycle lanes in my city. And guess what: In places where bicycle lanes are usable, people use them. Nobody rides a bicycle on the road if there is a usable alternative.