Even before Katrina I had an urge to start storing food. I went and bought quite a few canned meats and meals. My grocery store always has great sales on the 1st Wednesday of the month so I'll add to it then.
I just think we all need to be prepared, as much or as little as we can do right now. It does take time.
One local grocery store here has an annual caselot sale. That's when I rotate through my canned goods and stock up. I save all year long.