expand, don't limit options
I agree with those posters who write about the importance of opening doors and windows to more opportunity for communication, including both Faire Jour and Shel90. I think -- in an ideal world -- every deaf child should have opportunities to develop both sign and spoken language.
But it's not always an easy path to do either and there are downsides to both opportunities:
For access to sign, that may mean the family has to physically move to a new city/town, take new jobs, distance themselves from family to obtain access to a signing community. It may mean sending the child away from their community, apart from friends & neighbors, to a private school in order to provide an ASL rich environment on a daily basis; it may incur significant financial costs for the family or a serious drain on the local public school's budget (it costs upwards of $60K a year to send our 3YO to attend preK at a signing school), or require travel to another state for weeks, months at a time to attend camps and other enriching environments. It may mean losing a day or two a week with your child to take classes so ASL can be a part of your home environment. Could require a whole lot of technology (doorbell / phone flashers, new alarms, TTY/videophones).
For access to sound, it may mean lots of medical activity -- audiograms and ABTs and CAT scans and MRIs, possibly surgery, healing, and rehabilitation; an abundance of technology in your daily life (CIs, HAs, FM systems, wires to your TV, DVD players); speech and language therapy. In our case, costs are negligible as everything is covered by insurance, including the rechargeable batteries, but in some cases SLP and private therapy services can be costly.
So yes, you can focus on the downsides of gaining access to sound through CIs or HAs, or of incorporating ASL into your lives but the upsides to providing more communication options are enormous -- a whole lot more access in general (to people, to information, to education, to community, etc.). And in day to day and very personal terms I've seen the benefits: I've watched my daughter chat with great delight on the phone with her grandmother - who, unfortunately, does not know ASL. She spoke to her grandfather as he lay with eyes closed on his deathbed, and he squeezed her little hand in response. I've watched her hold extended conversations with her teacher -- in ASL. I've seen her interact with ease with classmates and the teacher within a crowded classroom -- in both spoken language and ASL, I've heard her listen as her piano teacher sang a brand new tune and then watched my toddler play it note for note without looking at her sheet music. She's a deaf kid who uses ASL and can hear when aided, and despite a first year with no language input whatsoever, because both ASL and spoken English were instituted relatively early, she is developing as both a native speaker and a native signer.
Every single small instance of access she might not have had without either sound or sign outweighs the downsides: the annoyance of charging her batteries, getting a meningitis vaccination, or strapping her in for the 4 hour a day ride to and from school don't even register on the scale. So from my perspective, I can't imagine not giving my child the opportunity to learn and use ASL right now. I can't imagine not given her the chance to learn and use spoken languages right now.