The term limit is there to press people and to make them think that when it’s all over they look back and should be proud of something they have done, not a mere “the pollsters told me to do X and I did X”
Unless you do whatever you want being POTUS sounds like a hellhole job.
All day building coalitions and having meetings , being mostly sedentary, no privacy, constant assassination risk, constant attacks…and at the end of the day a bunch of pollsters are your boss. You get to ride in AF1 but that’s not unlike a Boeing Business Jet and there are some also available for private charter
A president must choose their battles and use their political capital wisely, lest they burn it all and are unable to accomplish anything else for the remainder of their term.