One advantage that all these years gives me is that I know no game is perfect. Then, now, or in between. That provides important context.
In terms of pull...I have warm feelings for many of my early gaming products. But when I look at them now--one is sitting about 6 feet from me as I type this, I know how good they were. Its not just warm memories.
I also know the books only count for so much. Even how most people play only counts for so much. Who you play with of course matters, but again is not the full answer. My best campaigns were with D&D, with rules I knew to be deeply flawed, surrounded by norms that weren't much better, with players who were friends, or became friends, or were really never friends. (Also, I was not a teenager). They were great.
What do I credit: stubborn determination for the campaigns to be good, and keep going.