I don't know what your life/lives are like, and far be it for me to tell you how to live, but if your schedule allows it try shopping later at night.

I show up at CostCo, on weekdays, like 30 minutes before closing time and it's _wonderful_. Few people, nobody blocking lanes while they consider their choices, etc. Same goes for Safeway, Fred Meyer, Trader Joe's, etc.

It doesn't work so great if you've got young kids, or you want to come home from work and just stay home (reasonable), but it's worth considering :)