Speaking about hospitals

I recently spent almost nine hours on an ER bed waiting for a hospital room. I’ve decided, based on the soreness of my ass, that ER beds are made of the same material as airline seats back in the cattle car section. Yep, those same airline seats they always tell you can double as flotation devices. Just stick your arms through the straps and float. Right. You will sink like a rock. Those airline seats have all the floatibility of a cement brick. And less comfort. So I have to wonder why hospitals went to the same manufacturers to get ER mattresses.