But as soon as you go out into public around other people, you're a potential carrier for preventable illnesses that can harm other people.

You're always doing that, vaccinated or not.

don't want to die from preventable diseases.

No one does, but nature doesn't give a shit what you want.

But it's really ignorant to expect other people to want to die from easily preventable disease that you have the potential to carry around with you.

See above.

I'm not claiming people should die from disease. I'm not saying I want them to. What I'm saying is that if they do it's a net positive on humanity as a whole from a natural selection standpoint, and we should stop thinking so small, stop playing God and being so selfish.