That's on the very short list of worst, least enjoyable films I've ever seen in a theatre (or anywhere). I was in college when it came out and digging Tarantino via Reservoir Dogs (this was well before I had any idea he'd disavowed the script credit for Natural Born Killers) and this was of course just a few months after OJ, so I was super hyped to see it. Other than Rodney Dangerfield's terrifying turn as the evil Dad, it was a disgusting, exploitative experience. Oliver Stone, of course, has all the subtlety and tact of a forking sledgehammer, and he turned the movie into everything he pretended to be criticizing. Many years later, I thought maybe I'd been too critical of it and missed the point in my dumb college years, so I watched it again in the middle of the night and it was just as awful. Thirty years later, as we continue reeling from the Trump years, you can make a case the movie was ahead of its time in terms of taking the mash media to task for glorifying violent nihilists. But Stone isn't smart enough to do anything other than accidentally stumble into his broken clock moment.
PS: My best buddy, a film studies major, loved it, so as always, YMMV.