My mom, dad, aunt, cousin, brother, friend, sister needs a place to live. I have a three bedroom house, two kids at home. If I can house them in an ancillary dwelling, how much more noise would there be than if I consolidate and put someone in my house? If I did have a renter in an a.d. on my property, I'm not going to allow them to "disrupt the peaceful enjoyment" of my property for me. The neighbors behind me have three kids and it's always noisy. It's city living.
That would free up apartment space for someone else and make better use of space.