I love japanese animation even better than western one. Western animation is very well drawn (but now its only 3d) and is very entertaining. But You cant expect complicated story plots and realistic close to real life characters from it, because western animation is for kids or whole family. Japanese animation is like western movies - many genres and for many ages. From child to adult. I prefer to call some of animes not cartoons but animated movies.
For example try to call Hellsing or Evangelion a cartoon and show it to kids
They will be scared and do not understand much.
By the way now I am wathing RahXephon after 4 years without anime. Great series.