It is good practice e.g. if you are a contractor and work with multiple organizations.
When your project is done you simply wipe the related SSH key. This way you can be sure that they cannot ask you to do some more work without proper legal framework (no more access, sorry) and you can prove that if there are compromises they were not done using your credentials.
When your project is done you simply wipe the related SSH key. This way you can be sure that they cannot ask you to do some more work without proper legal framework (no more access, sorry) and you can prove that if there are compromises they were not done using your credentials.