I have to kind of agree with Morrison. Honestly, Batman's not even in my top 10, let alone top 20 superheroes. Not that I DON'T like him (I own many of his comics and cartoons), but I don't think he's the bees knees.
I think he's ridiculously psychologically damaged. As Martha Kent said in the Superman Animated Series: "That nutcase in Gotham". And yeah, he's super rich and beats up junkies when it might be more helpful to put them up in rehab, etc. Batman's one of those characters that, if you overthink him too much, you might go nuts. Kind of like wrestling catchphrases.
That said, it makes me sad to read Morrison's statement at the conclusion. That's what comics SHOULD be about but they're honestly not, these days. You've got wives getting raped, villains being mind-wiped, heroes making deals with devils, the good guys forcing their fellow heroes into registration camps/prisons which may as well be an allegory to WWII Germany, etc.
There are so few "fun" comics today that when they ARE fun, they stand out as being some of the best Nova, Guardians of the Galaxy, Hercules, All Star Superman, Johns' Superman run for the most part, Marvel Adventures, Atomic Robo, Batman Brave & the Bold are all great examples of this.
It's kind of like Alan Moore's statement that he wished Batman would be like the Dick Sprang Silver Age era, with being tied to a giant typewriter, teaming up with Ace the Bathound, etc. There was a fun, childish excitement behind these ridiculous but fun ideas. And, if Guardians of the Galaxy is any representation, it can still work. Especially if you have a psychic Russian cosmodog, an anthropomorophic squirel and a talking tree on your team.