what's wrong with fourplexes? i live in a neighborhood full of them and think they're great. they add a lot of character without additional massing, and the additional density unlocks commercial areas that are a walk away.
I don't want to live in a high density area, so that's why I chose to live somewhere else.
When you buy a house, you don't buy the neighborhood.
However you are completely onboard with doing the same to others.