It had a beautiful theme tune. It had the beautiful Jennifer O'Neill in a captivating if ultimately tragic role. And the idea was an endearing one that probably became the fantasy of vast numbers of teens - and not just in the USA!
But then there was 'friend' Oscar, who was such a jerk that he tended to spoil every scene he was in - which was a lot of them. It is hard to believe this film (and the book that spawned it) were meant to be a tribute to him! As a medic killed in Korea I can only assume he must've improved a lot as he grew older.
Hence the lower ('disappointing') rating and omission from my film collection.