Nostalgia & Cruelty! I didn't watch it from the beginning, but I liked it a lot. I was born in Greece in '77, and I must admit that many things were the same in us too. We had lesser drugs, but, ok, these things existed, you can't pretend you didn't know!
Some people say that it wasn't like this with the swinging, some others that there were not so many drugs, but, you know something? It was exactly like this! Furthermore, in Greece this situation would probably happen in a nudity-camp, and you would see people running on the beach naked, others eating naked, others having foursomes in front of unknown people! It was the period of sexual freedom, the "Kamaki", and the Matala! I need to say that the most famous "Kamaki" of Greece, living in Rodos island, was assassinated before some years, because he had become a pimp! They threw benzin on him and watched him burning! So, what innocent years are you talking about?
Of course the characters of the parents are underdeveloped. They are stoned all day-long, what sophistikated elements are you expecting to see? And the girl that likes oral sex is expected, every neighbourhood had one. But the movie focuses on the younger children, a girl and a boy, who end up in love. Their pictures playing remind me of my childhood in the village of my grandparents. Of course we didn't dream of leaving our homes, we believed we had future there. As things turned up, we were wrong, today Greeks migrate to "awful" Australia for a better life. But in the movie the kids had terrible parents, as already mentioned!..
Watching the movie I thought it was really made in 1975. But then, the idiot ending, that destroyed all the good opinion I had for the film, made me realise it was a 2019 film! Only in 2019 people are so retards, so perverts, to blow up a dead whale, and paint everything red with blood! What happened to people? How works their brain, if they have any?
However, you should watch the film and trouble yourselves with that.