Unless you're refering to 8X10 cameras which are less than practical.

There is nothing so beautiful as a well concieved and executed 8x10 contact
print

I have shot large format stuff for years, but it can't be used in many
situations and is just not practical. I used a deardorff for years. It's not
something that belongs on a boat or to get that rare moment on film. In fact,
in real life shooting it's pretty much useless.
Contact 8X 10s are fine, but I used to use a rail mounted enlarger for making
wall sized prints on a vacuum wall. I used to get the worlds worst paper cuts
and get blood on the prints...which I couldn't see until after processing.

RB