I happened to stumble across this article the other day (linked below) in the Medium features section and immediately recognized I had the answer to the question posed in the title. If you read it (I did not) you will be bombarded with all manner of medical mumbo-jumbo and scientific hypotheses which give smartly reasoned yet overly complex explanations for this mystery.
Why Is Everyone Getting Shingles?
Among young people and around the world, rates of this painful illness are mysteriously trending upward
It turns out the answer is pretty obvious, without shingles a roof will not keep you dry. Basically until you cover your roof with shingles it is just plywood over some insulation and beams. The first time it rains the plywood will soak through, and once it is fully saturated will eventually begin to drip into your home. After a time mold will start to grow and then the wood will rot. You need to get shingles well before this point as you do not want this to happen to you. I know what it is like to live in a home without shingles and it sucks. I say go out there and get as many shingles as you can afford. I would even suggest stockpiling shingles in case of an emergency. That way if you ever need to move into a home you can quickly rain proof it with a little elbow grease, and a lot of help from our good friend, shingles. Rather than asking sarcastically why so many people are getting shingles maybe we should be asking why more people aren’t getting shingles? In my view not nearly enough people recognize the importance of shingles. Our time would be better served reading and writing articles which highlight the many positives of shingles, instead of bashing them for reasons I can’t understand. In fact I would go so far as to call this article anti-shingle which is downright disturbing in this day and age. What next, why are gutters on the rise in children? Why are all our pets getting windows? When will it end? Where will it stop? It is just plain sick and I for one won’t stand for it. Who’s with me? I need to go throw up.