Re: Irritated with family!
We haven't really had opposition from our families, though my mom was a little apprehensive about BG 4.0 (she had only heard of FB and recommended those). She was here with us for about a week before DS was born, and 2.5 weeks after. Never having seen modernized CDs, she was hesitant, but after she used them she became a believer, and has been recommending them to anyone who's expecting!
We've had opposition from friends, though, wrinkling their noses and asking if we're using a diaper service. Thankfully we have several friends who CD, so we've got some great support!