I suspected for a while this was coming, but that doesn't mean it doesn't hurt when it happens.
He most certainly didn't do all this alone, as Stan naysayers will be quick to admit. The artists wrote the stories as much as Stan did, but that in no way belittles Stan's creativity and accomplishments. Stan's personality is all over those characters, and that should never be forgotten. And no one--no one--was a bigger cheerleader for the comic book industry than Stan "The Man." No one comes close. He made you feel welcome to this wacky, wonderful world of comics--everyone was invited. Even people who never held a comic knew exactly who Stan Lee was; Stan made sure of that.
On my Mount Rushmore of creative people who have affected my life so strongly, there are Walt Disney, Jim Henson, Charles Schulz--and Stan Lee.
The world is better for his being in it.
Rest in peace, Stan.