I’ll disagree with a few points here. My experience is anecdotal and comes from my Yellow Nape Amazon (Cleo) and my brother’s Gray (Smokey).
The wing clipping doesn’t seem to affect the quality of life either way. Smokey’s wings are not clipped and he does not fly around the house. If he wants to leave his cage, he climbs to the bottom and jumps the last 10 inches. Cleo’s wings are clipped (I do it myself with bare hands, he doesn’t mind at all) and his behavior is the same as Smokey’s. I leave the last two pin feathers per wing, so if for some reason he was to fall from any height, he can fly enough to cruise to a safe landing. Neither bird appears to miss flying and both love nothing more than running (waddling) around the floor and climbing stairs.
When we had parakeets (Budgerigars) we clipped their wings when they were young but let them grow in. It was like having little fighter jets cruising the living room. If I lay on the couch reading and ignored them, they would buzz my head, flying between the book and my face! We never had a problem with windows, mirrors, or toilets, but we didn’t let them out when we weren’t home.
Parrots are naturally playful and can easily pass time by themselves if given plenty of interesting toys to play with and destroy, and you switch them regularly. Every couple days I cut three inches off a 2x4 and wire it to Cleo’s cage and he goes to town on it. Different breeds of parrots have different attention needs, some, as one of my parrot books puts it, “prefer to be admired from a distance”.
Parrots do bite, but not for “no reason”. If you are chilling with your bird and someone suddenly enters the room, he may bite you to “alert” you that there may be a threat. Cleo used to do this frequently, but over the past year even this has stopped. Most biting situations can be anticipated and avoided if you observe your birds behavior. My avian vet told me the only nasty facial bite she’s seen was an Amazon that was sick (Amazons, btw are notorious for being the most feisty, aggressive breed).
Feather plucking in grays is common, but again, it’s never for “no reason”. It may be because of stress, boredom, second hand smoke, or sickness, but there is always a reason.
I don’t want to downplay the dangers of household chemicals, but they are usually exaggerated. Throwing away scented candles may be a bit over the top. I know the horror stories of people using oven cleaner and their birds dying, but mostly these are the exception and not the rule. It’s up to you if you want to ditch the teflon, but if the bird is several rooms away, you have decent ventilation, and you don’t let the pan overheat, you’ll be fine. Personally, I limit my use of teflon 'cause I’m a worst case scenario kind of guy. If we got our carpets cleand, Cleo would definitely be spending a few days at my parents house.
As for “pooping incessantly”, are you sure your bird is healthy? I know the 'keets pooped every 15-20 minutes, but Cleo and Smokey poop every two to three hours, and Cleo has never, ever pooped on anything but the cage or his portable T-perch (which we have since learned to always keep on paper).
I also want to say that while parrots are wild, not domesticated, they are highly trainable. Understanding why they do what they do, patience, and routine will go a long way towards behavior modification. Cleo used to fly at my wife and try to bite her, now she can get him to hop up on his T-perch, sometimes without his lunging at her. Baby steps, here. He occasionally snaps at her when she walks by (always at her back, not her front. I guess he’s a bit of a coward!). We’re making progress.
I’m kind of all over the place here, and I mostly agree with uglybeech, but I don’t want to discourage motivated potential parrot owners. The rewards are enormous. They are tougher and more resilient than people give them credit for. Cleo was captured in a South American jungle in either 1959 or 1960, spent 40 years with my caring, but largely bird-ignorant grandparents, shuffled to the corner of a nursing home for 18 months, then came to live with me. After a few mis-steps on my part, and lot’s of patience, he’s as happy and healthy as a parrot can be!