I read I, Robot and some other collections of Asimov short stories in my teens, but didn't read Foundation til much later in life. I enjoyed it thoroughly, but unlike his other stories, it was from an academic perspective.

Reading Foundation you can see were different authors got their motivation, and you can see the "foundation" of modern sci-fi.

Along side that, Asimov has always been great at Man vs Nature (or Man vs Cold, Unfeeling Logic), and less about dynamic, three dimensional characters and internal turmoil.

If you are not into this style, that is about personal preference, not about quality of work.

PS OP saying essentially, "I'm a writer and therefore get to decide what is and is not good" is the most pretentious thing I have heard in a while.