It's not just addiction. You voluntary start smoking, and on the packet it tells you you'll get addicted and cancer.
There are other areas where people engage in high risk activities like rock climbing or riding a bike ect. There's many areas of this.
Why should people who refuse vaccine be the one to "voluntarily" forgoe healthcare they paid for. Are you willing to reimburse people for "volunteering".
A lot of people, if not most, started smoking before the warnings were even prevalent.
Those that ride bikes or go rock climbing will only harm themselves. I responded to this exact same point in my last response to you.