*LONG*
okay...let me try to answer your query as it realates to my household.

Let me start by saying that all but 2 of my birds are rehomed or rescued birds. Some have more "issues" than others. Most (but not all) had been neglected at the very least, never getting out of their inadequate cages and fed a substandard diet. One (IRN) is handicapped and terrified of people. She likes to have her cage close to me where she will choose the location within the cage that allows her to be in the closest proximity to me--BUT if I attempt to get her out of the cage or touch her she literally throws herself against the cage bars in panic. Not much time required there. She is an old bird that had been badly abused and if she does not want to be handled,that is her right (IMO). Two others are a bonded pair of quakers, left in a tiny cage, fed sunflower seeds and allowed to produce unfertile eggs every few weeks for YEARS. They now share a HUGE flight cage, eat Harrison's pellets and fresh fruit and veggies daily. They do not require one on one time-they would eat me alive

. All of the others; 2B&G's, 1 CAG, 3Ekkies, 1 IRN, spend 3+ days a week in outdoor cages, (back in their own indoor cages at night) and get 2-4 hours out of cage time in the evenings to play on toys, boings, trees, etc. in my greatroom. Sometimes theyall go out in the same room together, I have three different play "areas" and I split them up by size/species, sometimes I only have one species out at a time. During this out of cage time they interact with each other, many know each other (and call each other) by name, and any bird that will have me gets at ~30 min of one on one time. Most nights that requires about 2 hours of my time. If they all decide they want one on one on the same night, I am in trouble

, so far that has not happened. Other than the Macaws, who want to held spoiled like a baby, most just want to be close, on my knee or on my arm. I can handle 2-3 birds at a time this way and they are quite happy to have contact without me trying to do anything more but give an occasional scritch on the head. I watch TV or work on the computer....
This is so much more than most of these birds have ever had...maybe it could be better. But, they have large, clean, safe, cages, good diet, lots of company (people and animal), out of cage time, outside time, vet care, and someone who loves them. Yes, I have a lot of birds...and I am so grateful that have been allowed the privilege of giving them a good home.
PS-- on occasion, I have taken in a bird in need that did not respond well to my houses chaotic environment, in those cases I have very carefully found good homes for them and placed them with loving families. Most people selling on CL or other sites are not as careful...so I guess on rare occasion, I am just a middleman.