It is not my responsibility to protect others. If they want protection they can take the vaccine themselves.
Would you feel the same way if you were to come across a child drowning in a shallow pond and had an opportunity to save them with the only “cost” to you being the inconvenience of being cold and wet?
Welcome to a low trust society.
Where collective action is nigh impossible by virtue of the near constant degree to which people can be found to have ulterior motives.