Dichroic Reflections

I have lived in California and Washington, and in my experience, garbage disposals were near-universal in the suburbs, but now that I live in Seattle, it has been several years since I've seen one (barring the one at my workplace that we are not, under any circumstances, to use). My family lives in Portland, OR and their kitchen doesn't have a garbage disposal. However, the places I have lived in in Seattle have ranged between 80-110 years old; perhaps if I knew people who lived in modern structures my sample would be different. The places I lived in the suburbs were all less than 20 years old.

Edit: Aedifica, sorry, wasn't meaning to respond to you, but the thread as a whole. Wrong reply button!