I think that the hearing loss needs to be proven and that as quickly as possible to do the implant to get the best advantage from it. I also think that parents need to be given realistic expectations.
I have no doubt that deaf people 'function well in society' but if one takes a little trip into the ADA forums here one can see the advantage of being able to hear fairly well even if it's through something like a CI. And the best results in learning oral language with a CI is if the child is implanted early.
To me the chance of not having to rely on interpetors (sees they're getting harder to get since their either aren't enough or they're taking better paying jobs) not having to worry about confidentiallty regarding phone calls or being hung up on by someone who doesn't understand or whatever the process...and those are just some of the things I would concider it a possitive thing to have a CI and have learned to hear and speak.
Is it necessary to have the ability to hear and speak? Probably not but oh boy I think that giving a child the chance to learn to hear and speak so they can do those things would be a great gift. Will it work with every child?
And yeah I know many of you disagree.