I totally agree with you. from 1974 to about 1993 TSR was magic and after some parts of it were still great like Planescape. AD&D 1e was just such a wonderful game and experience all around, a genre defining watershed for fantasy in general that today's fantasy seeks to emulate and borrows from very freely and a standard reference point in general culture without even understanding the source material. We've all seen the alignment memes for example and the debates on which superhero is which (I stand by Cable as Lawful Good). I consider it the pinnacle of AD&D with 1986, just before UA came out being the nadir of the game before 3e was released and then 5e.