This is something that literally everyone that owns a garage and saw horses does.

In fact having saw horses and a flat surface in your garage is superior to having a regular table, because all the pieces are easily movable.

Nobody is going to ask you, why are there saw horses and a door in your garage, but they will ask you why you have a table in your garage.

Yes. :) Here is an interesting link / video about it: https://www.aboutamazon.com/news/workplace/how-a-door-became...

That’s still true for the most part.