The world will always have a hint of danger, and germs and viruses are included in this mix. Life expectancy did not increase due to public compliants to health measures, it increased due to things like soap, showering/bathing every day or two instead of every few months and the standard for hygeine in factories like meat plants. And medicine has come a long way to cure old nasty diseases.
Edit: I edited my comment because I was a bit rude. I apologise for that.
Don’t know what you said but I do appreciate the apology.