kited, good ideas. I can definitely put some foamy mats in key work areas in the kitchen, where I'm standing a lot.

It's hard on the feet

I expect that most of the reason people think a wood floor is more comfortable is when it is over joists and so has more give. So I'll guess that hardwood over concrete will be just about as bad as concrete. But I'd like to see non-anecdotal data either way.