For those complaining about noise in apartments: in my experience apartment dwellers are quite considerate and when living in an apartment I never had any major noise problems.
Now that I live in a single home let me tell you about the noise of neighbours mowing their lawns, constant noisy renovations etc. and in general a lot more car noise.
Quite honestly, it was more quiet in the apartments that I lived before.
Edit: and besides, I think people are confusing apartments with the real cause: housing areas with low socio-economic status tend to be more noisy. Correlation is not causation and all that...
People are down voting you but I've had the same experience. The apartments I've lived in were very quiet. The suburban home I live in now is within earshot of lawn care daily. I literally never leave my land, when I say daily I actually do man daily.
Side note - even in an apartment (a large complex that is mostly parking lot and big patches of barren lawn) the lawncare guys that come through several times a week starting at 8am drive me up a fucking wall. I can't fucking stand lawns dude. Give me patches of unmoderated and peaceful nature over that shit any day. Density and nature do not have to be mutually exclusive.