If you're smart, you really CAN use coupons to good advantage. It's true that most coupons are for processed food, BUT, not all of them. You might have to wade through a bunch of junk to find the "good stuff," but it's there. Combine the coupons with store sales, especially in stores that offer coupon doubling, and stock up as much as possible (there are several pounds of brown rice in my pantry now that I got practically free after doubled coupons plus a store sale) on staples.
Also, even if you NEVER use a coupon for food, you can surely use the ones for health/beauty/cleaning items. Right now, under my bathroom sink, is an enormous supply of brand-name shaving gel, shampoo, toothpaste, etc. We ALWAYS get toothpaste free--our local grocery has 10/$10 sales several times a year on Colgate, so I save my 50-cent Colgate coupons until then, the store DOUBLES the coupon, and I come home with a load of free toothpaste (I collect several inserts from friends/family). My daughter is still using the dozen bottles of free L'Oreal Kids shampoo that was a tie-in with "Horton Hears A Who" last year.
My point being, the money that you DON'T spend on the items in the above paragraph is money that you CAN spend on high-quality, wholesome food.
If you don't have time to plot and plan and clip coupons, try The Grocery Game. They tell you when to use what coupon, so all you have to do is look at a list once a week, and buy from that list. They mark which items are free, and which are worth stocking up on.