I get enthused about food purchasing by buying from small, locally owned shops. I find it more satisfying, bizarrely, to go to the Asian supermarket for rice noodles and tofu and spring roll wrappers and then go to the greengrocers for my veges and fruit. In the last place I lived, there were three small shopping centres nearby (5 - 15 min by car, or 15 - 45 minutes walk) with many different specialty shops. It took longer, but it was nice, and I got to know the people and what they offered. And then, depending on what I bought, I would go home and think about the next week's dinners and whatever. Ooooh, and Farmer's Markets.

But, if food shopping just doesn't spin your propellor, you may find that this depresses you even more. If so, then my advice is to buy frozen veges. They lose hardly any nutritional value so long as they are snap frozen and don't rot. They're not as tasty as fresh, but they are sooo convenient.