Sure, I could wait 7 or 8 years until I qualify via insurance, but is that really worth the risk for what is an easily absorbed cost to me? Especially when I have a friend in her late 30s who just went through a very rough bout of shingles?

It makes sense to have targets like age 50 for population-wide public health recommendations. But it can and does infect people of much earlier ages.

Recent articles like this make me think I'll go ahead.

Infections generally increase the risk of future dementia. Like the more colds you have throughout life.

I recall seeing a few discussions on HN comments hypothesizing that immune system stimulation via the vaccine might be the root cause. Now that the Amyloid hypothesis is on the wane, hopefully we'll explore other paths.