Don't mince words with me. You very well, and unambiguously, implied that Reagan, and Jefferson, relished the power and prestige that came with being POTUS. Admittedly more in the latter's day and age.
Reagan wanted to be President. When he became President, he was happy he became President, he enjoyed his job and happily stood for reelection. Jefferson also wanted to be President, was delighted that he became President and happily stood for reelection.
They both proactively used their executive power and both declared their satisfaction with the results.
Neither of them ever claimed that the presidency was forced upon them and that they only served under duress.
What this has to do with covetousness is beyond me.