Maybe I live in the Twilight Zone, but our MUP's really are a dream. They are mostly laid along old railway lines, have very few crossings, cut through many forested regions and run along side rivers, creeks and streams.
The MUPs around here are infinitely more scenic than the roads. They often have fewer stops, in that there are bridges or tunnels crossing over/under many intersections, and there is never a concern that some inattentive idiot will run you down. A ride on one of our MUPs is a slice of heaven.
I honestly doubt that I would even consider a 27 mile, one-way, commute without them.