As someone who works in a hospital (pathology), I completely agree. Renovating 70 year old buildings doesn't always yield optimal space. There are always surprises when walls are opened up (asbestos, inaccurate wiring, etc). And at some point, modern infrastructure doesn't fit in older buildings. It costs quite a bit of money to do studies to discover if it's even worth doing renovations, and in my experience, the costs of the main project are always much higher than originally anticipated, so the plans get kicked down the road or cancelled.
Build new, and keep a few select design/architectural details. Or take photos. (I was based at WCH during that rebuild).