I'm vaccinated. I can still catch it - I'm much more unlikely to end up in hospital, but it's still an unpleasant illness to have, with a small chance of long-term complications that are not at all well understood.
And if I do catch it I can still spread it to others, who may not be vaccinated.
I very much care about not killing someone else by spreading Covid to them, even if they deliberately chose not to get the vaccine. I'm furious with them (and with the information sources they consumed that lead them to that decision) but I absolutely don't want to contribute to their suffering or death.