Convenience can be a good thing, but like most everything, is best in moderation. I was instructed on short notice that I had to buy a 'bag' of salad on my way home from work yesterday. It was the first time I had purchased one of those. I guess I've seen those pre-assembled salads many times before but never felt the need to buy them because during the late spring-summer-early fall months we typically pull all of our salad ingredients out of the garden. During the non-growing season it's more economical to buy a head of lettuce and a bunch of carrots, a cucumber, or whatever salad components are needed and assemble it ourselves. The bag salad did not taste unpleasant, nor was it outrageously expensive, and I have to admit it was nice just scooping the salad out of the bag, as opposed to cutting up all the ingredients - probably saved 5-8 minutes time.
Frozen foods are another area where there is a marginal gain in convenience, sometimes without sacrificing too much in quality (this varies a great deal, though, depending on the item)
Fast food is probably the best known example of convenience food. I confess I probably buy it more than I should - usually at lunch where time is at a premium.
Do you ever purchase pre-assembled salads? Are there certain foods you will NOT buy frozen purely on principle (say, frozen pizza)? When do you tend find yourself at a McDonalds drive-thru?
What value do you place on convenience where food preparation and/or consumption are concerned?