I'm going to put in my pennyworth as it's something I feel strongly about. There's bike lanes here but quite a few have glass sprinkled across them and the inevitable pot holes, which are dangerous to navigate on a bike.
The route I frequently take is a pleasant, quiet cycle into town. The Avenue is wide and basically sectioned into three, with two very wide grass and tarmac paths either side, the road's the same width as the paths.
Probably 6 out of twelve times whilst cycling, I'll encounter pedestrians/runners/electric chairs, or groups of people walking in the middle of the road, or running from side to side. I usually have to stop for them, and cars slow down. They're quite affronted if asked to move onto the path, they ignore the warning ringing of my bike bell.
And don't get me started on the army of 4x4's.
Yes, cars are an additional danger for bikes, and vice versa but on some roads pedestrians can also also a nuisance.