If my risk of shit of delta is essentially zero, being vaccinated myself, then someone eleven times more likely to die is also at essentially zero risk. Zero times eleven is zero.

Relative risk vs absolute risk.

Once the risk is low enough, you dont care as much about relative risk reduction.

Covid is survivable enough (for my demographic) that I dont care much about how the vaccine increases my odds of survival. I care more about long term risks of the vaccine and long term risks of covid and how the vaccine may mitigate it.

Even let's say, you are survivable enough (peak health, early 20s), you can still catch it and transmit it to grandma. Of course, if you also want to isolate yourself from society, then do whatever you want.

The person that takes the vaccine bears all of the risk of taking the vaccine. They get to decide if it's in their personal interest to do so.

If grandma is uncomfortable with the risks of being around others, she may isolate herself and bear the costs of isolation. She shouldn't be so entitled to demand that others take on a risk for her benefit.

That’s just not how vaccines work. You don’t take a vaccine for your own selfish needs, you take it for society’s needs. They are intrinsically opposed to libertarian ideals where the individual decisions must only apply to those individuals. Much of modern medicine and modern society are in direct composition to those ideals. Society has benefits, but it also has responsibilities.