I love and hate modeling in Sketchup. It’s very fast and quite capable but the way it joins geometry if they intersect pisses me off (automatic boolean operations at intersections). You have to modify the object to prevent that which I have always found absurd.
I see many architectural studios using it for their models and renders leading me to believe that it was a drafter with little to no non-archviz modeling experience (meaning they work almost exclusively in a CAD environment) or architects who have used Sketchup to build quick mockups of their projects for fast visualization but have about the same, or less, experience with modeling outside of that.
It’s just to destructive of a design environment for me.