It is - and should be - a matter of personal choice.
However, people who decide they won't get the vaccine must accept that it may be others choice - be they individuals or businesses - to not allow them into their homes, shops, planes, ships, etc. And they may get discriminated against for some jobs where their lack of immunisation might post a risk to others.
For a good case study on this, people can read up on "Typhoid Mary", a cook in America (NYC I think?) who was a carrier of Typhoid, refused - as was her right - treatment, but carried on working in kitchens, knowing she was infecting people. She even assumed different identities to get new catering jobs after getting sacked repeatly. In the end she was forceably detained because she refused to stop - so recklessly killing people.