Big plans for foldable smartphones

I also don't think I'll buy one, but I had a look at the Z-fold (lady at office bought one) and it ain't bad. Dex function, tablet on demand, etc. Very practical, I think.
At the right price, you might see more people getting it.
Why do people want to fold their smartphones?
I guess if durable enough, could be easier to fit in your pocket - and perhaps prevent (reduce) chance of cracking the screen when you drop it. I'm sure we've all done that before.
All smartphone are foldable, given enough force.