Have all of the presidents been married?
No. There was one US President, James Buchanan who never took a wife.
There have been no US presidents who have been openly gay. But there is debate whether James Buchanan was gay. The only one that never married as James Buchanan, so some people conclude that he was gay. However, there is no hard evidence that he was. He was engaged to be married as a young man but she broke it off for an unknown reason and then died soon after.
They are all male, over 35 when elected, and citizens of the United States. Presidents have lived in very different time periods, with very different understandings of country, society and the world. There have been brave presidents and cowardly presidents, intelligent presidents and not-so-intelligent presidents, warlike presidents and peaceful presidents... the list goes on. To try to choose a set of traits that encompasses all of them is an exercise in futility, and anyone who…