SUISEI NO GARGANTIA
This anime is a study of culture. It begins with many social interactions and activities, but later, it shows one’s regression to a barbaric state, and finally, it gets to the most complicated aspect of culture: Religion. The irony is that, even though the protagonist comes from a far galaxy with a highly advanced technology, he is the one who seems to be primitive! Even if you don’t appreciate those elements, there is also a lot of cute girls and giant robots! And WE DIG GIANT ROBOTS!