What the fans want are competitive games. And when there is such a huge disjoint, it just becomes boring, whether that's regular season or playoffs. It's like watching team USA demolish team Nigeria in the Olympics. Okay, it may be fun to watch the first time, but really, I wouldn't bother to watch it again. The Cavs played as good as anyone can reasonably expect in Game 5 and still lost comfortably. The only time they won was when they were hitting everything and breaking Finals records.
Historically, it's going to be an unprecedented feat for those teams to meet in the Finals four years in a row. I'm of the opinion that it's not going to happen next season. Like you said, while we can't speculate on what might happen with injuries, I just think the probability is that some team will upset them. Injuries, luck, mental and physical fatigue all play a role and it ain't gonna be a walk in the park sweep to the Finals for these guys as well.