I don't know about your tastes, but if you feel you've grown out of the anime, try to watch Neon Genesis Evangelion (by studio GAINAX). Despite the title, it's neither about the Bible, nor about religion, but about our coexistence in this complicated world. It has deep psychological and philosophical context. Psychological component is that there are no negative characters - you are given the opportunity to be in the shoes of each of them, and to see the world through their eyes. Philosophical component in its subjective idealism conception (ref Plato). It's assumed that mankind was originally a single substance (eidos of man), one mind, one soul, but was divided into individuals consciously. So people can't understand each other (based on subjectivism), as they do best to maintain their shape (personality) with a so called "absolute terror field (at-field)". Though, unlike Sartre and other subjectivists, Anno (author and director) says that coexistence of our subjective worlds is possible, unless we wish to.
Well, I can talk really long ^~^ .. So, my advise - watch it yourself. Besides, there is really interesting and dynamic plot.
Though I watched it long ago, I often re-watch it when I feel down, and it helps me to keep on living XP