I was hit by a bicyclist once. He could have chosen to walk, but instead he chose to ride at something like 25mph down the same path as I was walking. He saved a few minutes. A lot more people get injured from bicycles than from safety minded pedestrians.
Yes, this happens, but I'm not sure what point you're trying to make. That, like cars, bicycles should also be separated from pedestrians? I agree, dedicated cycle lanes are great and we should have more of them. But this is an entirely separate issue.
But far more have/will compared to those driving normal cars (including comfortable ones that fit car seats and plenty of junk).