Dogtrousers
Kilometre nibbler
The only bit of shared use path that I use with any regularity is near where I live. I use it at the end of long rides, to relax a bit. It has loads other people using it ... in a shared manner. Dogs, children, pushchairs. I just roll along slowly. I often get off and walk for a bit. I'm ever vigilant for children and dogs wandering in and out of the bushes. It can be slow progress. For faster progress there is the nearby road network.