In Gnomoria is there generally an advantage to walls and doors?

I tend to mine the heck out of the first few underground levels and use the areas to build workshops. I usually mine them into one huge area--I'll just place a workshop that creates something next to a store and place that next to the workshop that consumes it with no walls in sight.

When I see other peoples maps they often build walls to enclose the workshops.

Is there an advantage to this (aside from aesthetic?)

Solution 1:

There is no advantage when it comes to workshops. For personal quarters however, walls count when calculating the value of the room. So you can use one wall to increase the value of two adjacent rooms. Source.