@kimu (adding to this)
As someone who had a shingles flare up (in my 30s...) whatever one might perceive as "rough" from the vax... the real thing is substantially worse. Like not even close.
I got the vax early last year (not 50 yet, but qualifying circumstances) and am dealing with the aftermath of a second flare up now. Yeah, it can happen. However, thanks to the vax, the flare up is WAY less than the first time. It's just a bit annoying, and never had a rash.
Get yer shongles shit!