I still think it's extremely cool that you're able to find as many worthy things as you do! Definitely one of the benefits of living in a city vs. a small town... everything here gets "passed down" 17 times before it ends up at a thrift store in severely shopworn condition.
It's fun to do the yard sales when we visit our daughter in Seattle, though! Amazing what people who live in million-dollar homes will let go for a few dollars!
I'd prefer our society passing items down, but they barely make it beyond their first owner when they're outside. Yard sales are fun when they're clustered together. You just never know how little people might want for something that you see screaming in value, and then you even negotiate down. I often feel bad when I get a good buy and try to round the change up so I don't feel as bad for taking the profit from them.