Public service is also called civil service or civil servants, a job to serve the people. Some stay for awhile while some serve for life. Political leaders too are in the act of serving the people, as long as they are not self serving. Some serve a few years, some serve for life too. Some may argue whether they are serving the people or serving themselves.
One thing for sure, the people will have to serve the retired politicians for life, and to live in abundance. Serving for life is taking on a new meaning.