I also heard almost all terrorists and child molesters talk to others in their homes. There's many reports of terrorists getting together in someone's house to plot and exchange information. I think it's about time we gave the good guys the tools they need to find out what was said in a room. We wouldn't want to leave pedophiles and terrorists any safe havens, would we?
And don't worry about abuse - any time a police officer requires access to the recordings of microphones that will be mandatory in all cars and houses, a judge will have to approve the request, so the risk of abuse is minimal! Only privacy extremists would be against such common-sense precautions.