There's always a risk-benefit calculation, depending on the person and their medical status it might not be worth it (for that person) to get vaccinated if they

There's always a risk-benefit calculation, depending on the person and their medical status it might not be worth it (for that person) to get vaccinated if they already had the disease. Of course for the society as a whole there might be big benefits even if some of these people stand to loose their health or even their life as with the Astra vaccine and the atypical blood clots.