Like everything else in this world, there's no accounting for taste and, for some folks, it appears there are no bounds to ignorance, as well. If you always or nearly always prefer the sound signature of something other than a MAC amp... good for you! If you like or love MAC amps... good for you, too! This is about as productive a discussion as asking why so many people hate broccoli or asparagus. Does that make people who prefer peas over broccoli or string beans over asparagus any more or less intelligent than those who don't? Does it make them any better or worse judges of culinary gastronomy? Is it productive to debate which flavor ice cream is best and connotes who has better taste? Of course not! If everyone or nearly everyone liked the same things, all the time, it would be a pretty dull world... wouldn't it? There's good reason why so many famous professional musicians prefer MAC amps over anything else and I don't think that has anything to do with those beautiful blue VU meters. There's also good reason why so many people who can afford MAC amps choose them after hearing the competition. To argue that there is always something else that's "better" or sounds "better" than a MAC amp in fair A/B shoot-outs sounds a lot like that little kid in the neighborhood we all grew up with who always had something "better", bigger, newer, shinier or whatever, than anything you did. You know... that little kid who always had to be smarter? Threads like this expose those little kids! Chances are good that MAC amp owners have heard some of the competition heralded here by those kids with their snarky comments and obviously thought the competition didn't quite measure up.
