If I have any children at this point, it would be a medical miracle!!
OK, seriously - for me personally, my prime child-bearing years would have been 25 to 35 years ago. If I had had a deaf child at that point, I probably would NOT have done a CI. The technology was still iffy, the surgery was very new, and I think I would have been too scared to have been an early-adopter.
If I were a new mother today, I certainly would very seriously consider it. I can't say for sure what I would do, but taking everything into account, medically and socially, I would certainly consider it a viable option. But of course would try HAs first, as everyone recommends.