Your father and you must have poor immune systems to have shingles thay young.
I have had multiple friends get shingles in their optic nerve requiring massive and expensive antivirals to save their sight. They had lingering eye pain for years.
I got the shot.
My dad lived to 97. Healthy as a horse til 3 months before he died. I think our immune systems are just fine. If shingles shot works for you great. Not for me.