Shingles is caused by re-activation of the varicella zoster virus for those that have had chicken pox.
Are you saying that it’s devastating to those who have had chicken pox as adults or for those that have not had chicken pox at all? Because you can’t get shingles if you’ve never had chicken pox.
So you’re saying if you never had chicken pox, the varicella zoster virus just misses you altogether? Perhaps you should review the links I sent earlier in the thread.