I don't know what an "MUP" is...

But where I live, there are bike paths that are made from cement, like a sidewalk. I hate the seams in sidewalks, so I avoid them.
There are also paved paths, but they are generally narrow, and encountering runners; roller bladers; and walkers is more trouble than they're worth (to me)
Or, they wind around ponds, or through parks, etc. which lengthen the distance I'd have to ride.

I stick to the roads because I'm more at ease riding in traffic than a lot of other people are. Plus it's usually the shortest route to whatever destination I have.

I ride smart; defensively; a straight line; I signal my intentions clearly; I ride with traffic; at night, I'm well lit up.