I doubt candidates or sitting presidents have any meaningful privacy once the secret service is involved.

I doubt presidents have any practical freedom of expression during or after the presidency.

I think it is reasonable that these sacrifices and others be made to apply for and achieve the post of leadership in our country. Being a public servant is a privilege and a burden if done well, and certainly it requires exactly the right person. Most historical leaders who were great suffered and sacrificed, some of them paid with their lives for the honor of serving their people.

More research is needed to flesh out the concept, but personally these are my expectations and our current system is a circus that serves itself at the expense of the people.