I think it's about time. And by big, I mean BIG. As in, now everyone is writing humor books. People will say, "No, it's not. Look around. It's not big right now. Why should it ever?"
Because things change, silly bear!
There was a time when horror wasn't all that popular. But then Stephen King came around. Same goes for JK Rowling. The big boys even told her, "Listen kid, children's books don't sell. You should get a day job." After Harry Potter took off, everyone jumped on the kid's books train. And I don't remember a time before Twilight when teen horror romance was big, unless we're going wayyy back to Bram Stoker's Dracula days.
All this applies to Agatha Christie (mystery), Dan Brown (religious thriller), etc. So that's what I mean by BIG. Humor literature is doing well (I think). I hear Tina Fey's book is funny, and Dave Berry's pretty good, too (in a not-too-edgy-hey-look-at-me-I'm-Stephen King's-friend kinda way). The only really popular, famous, celebrity humor author I can think of that will be remembered for all time -- as much as Poe for horror -- is Mark Twain.
One day, the headlines will read: "Humorist (Insert author) tops JK Rowling in book sales."
And God bless whoever that's gonna be. Humor is good. Humor heals. We've all heard the stories of people beating cancer by having a good laugh or two or three. But I guess my point is...things change.
And every cat gets her day.