At least during Moyes' reign we had plenty of reason to be depressed. As is we're 2nd in the league, favourites to go through to the next round of the CL and just off the back of a win against one of our main rivals. Relatively, things are going well. Kinda weird that the football forums are still so negative. Maybe Moyes broke us.
No, there is actually a very simple explanation. First Mourinho wasn't liked by a large part of United fans and his football neither but more importantly we haven't played consistent good entertaining football for more than 5 years, half a decade, it's getting old.