I care because humanity has been screwed over by this virus for a year and a half now, and the virus could be completely controlled by now in any country with a sufficient vaccine supply. But it's not, because people refuse to do their part in helping to take care of their community. That's disgusting and unforgivable to me. The blame for any COVID-related death that occurs in the US now falls squarely on the shoulders of the unvaccinated.
Other people are much more leaning towards frowning upon the partytime people "let us hug and stay together and forget about it all". Those other people believe that if people had been careful, the damages would have been minimal. Using some of your words,
«the virus could be [...] controlled by now in any country with a sufficient» carefulness in the population.
Demonizing unvaccinated people is the language of an abuser: "Look what you're making me do to you." The way out of abuse isn't ever to comply with the abuser's demands.
See how silly that sounds?
Also, the comparison is nonsense. If someone drinks and drives, they did intake something into their system which made them a risk to others. What you want is the reverse. Everyone is by default a risk to the society, and only if the get a biannual shot from the latest and greatest experimental medicine, you deem them no danger to society. You are trying to outlaw the human condition. There are people who think this is a big deal and needs to be opposed. I agree.
Making it a stance about personal freedoms is often used but it detracts discussion about facts of approved vaccinations, positive or negative they may be.