He didn’t like or want politics.
But I really don’t care
“Kennedy was asked publicly if he was interested in politics as a career. He replied no, for the time being, but would not rule it out for the future.[19] Just prior to his death, Kennedy was seen as a frontrunner for the New York Senate seat vacated by Daniel Patrick Moynihan, the state’s senior senator.[31] Ted Kennedy believed that politics were John’s destiny, and urged him to run for several offices. By the summer of 1999, Ted believed that the best chance to return a Kennedy to the White House would be for John to run for Governor of New York in 2002.”
https://en.wikipedia.org/wiki/John_F._Kennedy_Jr.#Politics