These 1-lane roads are already a headache for those living there, with cars parked on both sides, making dealing with ANY traffic a pain.
Traffic is terrible where I live, but I'd rather spend another 1-5 minutes on a major thoroughfare than drive through someone's neighborhood.
I don't live on a street that has this problem (it's a dead end) but we have our own parking disaster unrelated to thru traffic, so maybe its easier for me to empathize with these homeowners about something that they have almost no control over and lowers quality of life.