I agree. Have never had to tackle this obstacle as we're yet to conceive, but a girlfriend of mine used MCNs for both her boys, and she loved them. But the mother of a mutual friend, who considers herself the authority on all things due to the fact she's a midwife, used to make comments left right and centre about "those stupid things". But for my friend, it was the most cost effective and appropriate option for her.
For the record, I have my partner sitting next to me and when I mentioned this to him he said, "Yeah, it's all about what works for YOU".