No way. I have teenagers. When the phone rings, DH and I just watch those 2 battle it out over who will pick it up.But I hardly even hear it ring anymore.
DD17 will stand right by dd14 when she is on the phone. She can hear the click when call waiting comes through. They fight because dd14 won't click over, and dd17 is just WAITING for that one call. This is the same girl that can't hear when I have said 1 million times put your work schedule on the fridge so I know what is going on, but she can hear that little click 10 feet away with the phone at her sisters ear?

But I hardly even hear it ring anymore.
Short answer: we answer our cell phones when we feel like it, which is usually always unless we're sleeping or otherwise occupied, but never our home phone.
Just because people get the number doesn't mean they have a right to interrupt me in the privacy of my own home.