When whooping cough came to our town when DS would be vulnerable, we had him vaccinated. We were not vaccinated, though, nor did we have a booster.
When DS had his accident last year (stitches), he got his last booster of DTaP for tetanus. He was at risk, and he was due for the booster anyway. Next one is at age 10, and we'll see how we feel then. D and T are pretty important at that age.
I also know preventative care for those diseases, in case the vaccines don't work -- they don't always work.
And, I'm having a DICKENS of a time getting my son to catch the chicken pox. I've exposed him 4 times now, and still no dice. He's too darn healthy. LOL (I am infinitely blessed and lucky and thankful for it).