"Why covid vaccination, rather than those who smoke etc? Think of it as similar to, say, smallpox. When I was young (yes, long ago; I am one of those really old people), smallpox was endemic in various parts of the world. Now this killer disease has been eradicated.
I was given a smallpox vaccine, long ago. I could have refused. If enough people had refused, the world would still suffer from outbreaks of smallpox. Getting a smallpox vaccine was a moral requirement then. Why? Because not to have it would possibly have caused harm to others. If enough people refused it, smallpox would still be endemic.
Now we (we humans, that is) are faced with another killer disease. And we have vaccines that may plausibly confer immunity. Not to everyone who gets vaccinated, perhaps. But at least to a significant number.
Without these vaccines, Covid-19 will continue to run riot, killing many, condemning many others to lives of misery. If enough people get vaccinated, we can overcome this disease. But if not enough people get vaccinated, it will hang around and certainly evolve and mutate in such ways as again to be a threat to us all.
If one person does not get vaccinated, the risk to the rest of us may be small. But if many people do not get vaccinated, we will all be in danger. In such circumstances, we have a moral obligation each of us to get vaccinated. That seems clear, no? If we each can do a small thing that, taken together, gives a large benefit to humanity in general, we jolly well ought to do that small thing!
OK, now, some people, for various reasons, think (wrongly) that they have good reasons not to get the vaccine. And we believe strongly in personal autonomy. What should we do? We know it is morally imperative that everyone who can gets vaccinated. But we do not wish to make it compulsory that they do. So, what?
One thing we can do is persuade individuals of their moral obligation. This is not to say we should abandon anyone who is not perfect (we would all suffer badly from such an extreme policy!) Nor is it to base our policy on cost (I do not understand why you thought that). Simply, it is to say, strongly, which is the case , that if you do not get vaccinated you do wrong to others.
This is different from, say, smoking, in that arguably smoking only hurts the smoker. It may be wrong, but not explicitly to others. (OK, I know, passive smoking, etc., etc. -- that reinforces the main point though, does it not; we should avoid harming others.)
As for those who think, 'Me not getting vaccinated will not matter much,' they are like the Amazon farmer who thinks, 'Cutting down this small bit of forest will not matter much.' Individual choices may coalesce to cause harm; the harm so caused means the choices made individually were bad choices.
So, as I have said, if you do not get vaccinated, you do wrong because of possible harm to others. And doing wrong makes you a bad person. Yes, you may be a wonderful person in other ways, and, yes, we may still love you as a person overall for what and who you are. Still, though, you will in this way be a bad person if you do not get vaccinated.
Is it obvious how important this is? I think so. Are you convinced? I hope so.
Everyone, please get vaccinated. It is the right thing to do."
@9toenails what a great post, thank you.