Can you help me understand why so many people are obsessed with anti-bacterials and hand sanitizers for hands, but find it ok to put their dirty body in bed without showering?

So many people are into hand sanitizers and anti-bacterials, hand scrubbing, etc. Yet they will sit in restaurants, on public transportation, office furniture where many others have sat, and all other types of situations, and yet, without showering will put those dirty bodies into their bed sheets.

Does it occur to people that when they get into bed without showering, they’re putting all of the germs from their day into the bed sheets?