I think there are two separate grades of anime.
There is the stuff that is very cheap and mass-produced and stuffed full of staples/stereotypes/cliches of its form. It's the same as cartoons but tailored to a different culture. I enjoy them to an extent, but don't think they are anything special. This is stuff like Sailor Moon, Naruto, Tenchi Muyo, etc.
But... I also think there is a lot of stuff that stands out from this, and not just from Sato Dai (who is amazing). There is also the likes of Satoshi Kon (Perfect Blue), Miyazaki, Toriyama (who is the progenitor of many anime tropes but was himself very original, I believe), Masaaki Yuasa (Mind Game), Katsuhiro Otomo (Akira), Yukito Kishiro (Battle Angel Alita), Hideyuki Kurata (Now and Then, Here and There), Kunihiko Ikuhara (Revolutionary Girl Utena), Kouhei Kadono (Boogiepop Phantom).
I totally admit I looked up half of those names based on works I found unique. Most of them have produced anime/manga of the former type, but each has also produced at least one real gem. The thing about these gems is they are of an intellectual and/or genre-bending nature that almost certainly would not survive production in the western world, but can be found with relative ease among anime/manga. The western world has its gems, but they're usually of a different nature. Over here we don't like to break plot formula or genre boundaries or challenge commonly held perceptions, and when we do, it's usually many years before those works gain real appreciation. We're more likely to produce work that does a pre-defined and well understood thing and just does it really well.
Plus on a more personal level, I'm incredibly disillusioned with modern western ways of thinking and connect more with the existentialism and relative morality of anime/manga.