Nobody uses half-implemented unsafe bike lanes that:

- cars sometimes drive in

- cars and delivery vehicles park in

- have frequent gaps that dump you into the road

- have no meaningful separation from vehicular traffic

- are not clean enough to ride on easily

People are happy to use well-designed and maintained bicycling infrastructure.

I've found the bike lanes in NYC to be minimally helpful, and in some cases, I think the way they are is downright dangerous. I've seen where the car lane merges into where the bike lane is (and the bike lane at that point ceases to exist), and it's incredibly non obvious. To say nothing of the places where the bike lane is actually in the car lane the whole time anyway, and cars are meant to (swerve and) pass the bikes on the left (?!).

This really depends on where you are. Some European cities the bike lanes are in constant use, to the point if you're not as accustomed to it as the locals you may well cause an accident if you try join them. (And take care crossing them.)