Be that as it may, the post I replied to, and the OP, are saying there's literally no reason to take a vaccine except to protect oneself.

I’ve gotten all my vaccinations, as has my kid, but not against chickenpox.

Most children receive MMRV (Measles, Mumps, rubella and varicella) an attenuated vaccine. A small amount of a live virus that your body can then produce natural antibodies. The best kind of vaccination that is extremely effective, but not suitable for children getting chemotherapy. It is the full virus but only a tiny amount. Attenuated vaccines are not suitable for some very serious viruses, unfortunately.

You’re supposed to get chickenpox, aren’t you? I had it when I was 7, my kid had younger than that, but neither of us developed shingles and are now immune for life.

Most parents just want their kid playing with others that have chickenpox so that way you get natural immunity from having contracted the virus. It is not for life but for approximately 10-20years. As a child, it is a minor irritation as I too contracted chickenpox around 7yrs old so I didn't require MMRV, but It should definitely be up for contemplation from observant and good parents.

Why would you get vaccinated against a dose that only lasts a week and you can only get once?

So that your bloodline doesn't end with you is a pretty good reason.

If your kids get one of the MMR viruses after puberty then they can become sterile. Also, measles can be deadly. So if it looks like your children won't get the virus before then, you need to give them the injection unless the parent is a complete retard, then Darwinism takes over thankfully and wipes out the fuckwit genes from the gene pool. Fingers crossed a virus wipes out Mormonism.

You typically receive MMRV at 4-6years but you can receive it up to the age of 12. Typically girls can go through puberty 8-13, boys 9-15yrs on average.

Is it fear of shingles or what’s the purpose?

As I explained earlier that is not the primary reason, but shingles is a very serious illness that can be a recurrence of measles that can lead to pneumonia and blindness plus debilitating nerve pain for several months, crippling nerve pain that can leave you bed-ridden.

Shingles is the Herpes Zoster, it can be triggered by an immune response later in life from previously having had Measles, Mumps or Rubella.

Being bed-ridden for half a year with what feels like knives stabbing you all over your body including your genitals, possibly going blind for the rest of your life and a very real chance of dying from fluid and pus in the lungs sounds awesome though.