I grew up with R14, where PS was new and only one layout per drawing, but
since R15, with up to 255 layouts per drawing, I've never looked back.
The
biggest fear is that your whole drawing is lost due to corruption of some
sort. If you autosave often enough, backup your computer enough, the only
fear then is a total complete meltdown of your system, and those stories
are...one bad apple... Using multiple layouts allows us to draw first
floor
ontop of second ontop of third and so on and so on etc... Then when the
Architect or owner changes the plan, modifying one drawing beats modifying
three or four. We xref architectural for structural, but foundation,
framing roof framing etc... is all in one drawing.
On the flip side, when sending drawings to contractors for bid sets as
individual sheets saves misunderstading because they couldn't understand
what they were looking at. opening a drawing, printing it, closing it and
opening another is easier then opening a drawing, picking the layout,
printing it and picking the next layout and printing it. (Speaking in the
sense of the contractor who don't know computers very well.) The
industry,
especially the government, is not yet understanding this whole
paperspace/modelspace thing. So untill they have a clear understanding,
we
are hindered by those who we need to understand our drawings.
Just my thoughts.