All of the above answers plus...
8) Someone who understands the true meaning of COMMITMENT... someone who understands that parrots are among the longest-lived creatures on our planet.
We have become a fast-food/disposable society and the pets we have are paying the price. Too many people get a pet and 6 months or a couple of years later, move or get married or have a baby and all of a sudden "we have to get RID of our pet"... (I feel a rant coming on
) I have yet to see a Craigslist ad for someone wanting to re-home their child because of "allergies, moving or, god-forbid, ANOTHER baby"...
The smaller parrots aren't as demanding of time/money/attention as the "big boys". Budgies and cockatiels live anywhere from 10-20 years, so have a much shorter life-span than the larger parrots... so therefore, when a younger person wants a bird, they are good choice, because by the time a young person has finished school, found a career or job, settled into adulthood (mid to late 20s?) the parrot that they started with as a young teen will be heading toward the end of it's life cycle and the adult should, by then, know whether they want to commit to another bird and if so, what kind of bird that will be. Also, by then, they would/should have the financial ability to honor any commitment made to the larger parrot.
Hope this helps answer your question....