Just a simple question: could it be any more obvious, any more accepted as a fact, that

[Atticus]

Donald Trump is seriously mentally ill? Insane? Unhinged?

Would rational people allow this man to occupy ANY position of authority?

[guillaumeb]

1. One aspect to consider:

37% of the voting population might be unable to recognize that Trump is insane.

[Lulu KC]

2. Unfortunately, unrational people are allowed to vote

And to run for president.
But to really answer your question, it does seem obvious to everyone I know. And he's not just mentally ill, he's mean. I could handle a little anxiety disorder or depression in a president, but this is different.

[cyclonefence]

3. I believe he is suffering from a serious, incapacitating mental illness

and I also think he has recently suffered at least a small stroke. Anyone who loved him would get him out of his job and at home receiving care. But nobody loves him.

[Midnight Writer]

4. I'm betting small stroke, too. Probably several. Runs in my family, I have seen this before.