Opinion: Why do hospitals hate sleep so much?

I’ve been hospitalized once in my life, four years ago, and ever since then a very specific question has rattled around my brain, fruitlessly seeking an answer: Why are hospitals designed to allow patients as little sleep as possible? Is my phrasing a little too aggressive? Designed to prevent sleep? Maybe that’s going a tiny bit too far. Instead let’s say: Why do the people who design hospitals not give a rat’s ass about patients getting any sleep?