I dealt with neighbor noise in 3/5 apartments I rented. It is why I will _never_ share walls again. What you're really saying is that you are a person who is

I dealt with neighbor noise in 3/5 apartments I rented. It is why I will _never_ share walls again. What you're really saying is that you are a person who is not bothered by neighbor noise. That's fine, you've self-selected into an environment where tolerating that is necessary. You should realize that most people find neighbor noise to be a stressor, especially as they get older. Also, as an aside, everyone I know who below the top economic tier and lives in SF _commonly_ complains about neighbor noise. I think you might just be insensitive to it.