I just liked the simple finality of the word. It made me laugh.
The shape of the word, with punctuation, is also diminishing, from left to right.
Also, when placed into the subject, title, and text body, it made a shape like this ">" , which I liked.
Finally, in elsewhere, I used it to end a conversation I was not included in. (It still stands as the final word, out there in cyberspace).
"No." evokes a paternalistic and dominant theme, like a grunt of a silverback.
"No" is not my true nature on most things. I'm more of a "Yes" person, like that Jim Carrey movie. So, for me, "No" is a very meaningful, blunt statement.
"No." is the verbal equivalent of stabbing a Bowie knife into a wooden table.