I would like to give the positive side, as we had peafowl for several years. My husband just said that he thought they were wonderful to have around, that they enriched our lives with their beauty, and that they had real personality.
Previously, I, too had heard the common wisdom about how noisy they supposedly were. But, fortunately, while on a weekend trail ride, an old cowboy told me that the calling was really only for a couple of months during breeding season.
We took a chance on a pair and found that to be true. Our peacock only called during March to May, and not that often even then. In exchange, we enjoyed his great beauty (and our peahen’s loving personality; our vet called her Sweetheart, as she was a living doll) and the benefits of snake and superb scorpion control.
Perhaps the noise is a greater problem when multiple males are competing for the females? Having had chickens and living between neighbors with chickens, a single peacock is nothing like the daily, much more constant noise of a rooster, IMO. If our peahen lost sight of her mate, which only happened a couple of times, she’d get on top of our barn and call for him, however, it was not raucous.
We still miss them, although a couple of neighbors now have peafowl (and we haven’t heard a peep yet, although admittedly they aren’t super close), especially when we have to deal with scorpions. No problems whatsoever with mirrors or poop (ice cream cone?! our birds never had that; the only time we ever noticed bird poop was during intense storms, when they would hang out on the covered washrack for hours - it just looked like normal bird poop, nothing extraordinary). Never grumpy or unfriendly, but I guess that could depend on the individual bird.
We did keep them confined for a couple of weeks before we released them. Every year, I’d collect the peacock’s tail feathers when he’d shed them; friends and crafters always wanted them.
By the way, they hated squirrels with a passion. And, they would show up when I rode in the arena (guess the dust was kicking up the occasional bug).