Yeah, the neatness is just a side effect of wrapping the food tightly and properly. I hate wasting food too, which is why I take care to wrap and close things tightly. If food could be preserved to the same quality without doing so, I wouldn't care as much "how" it was wrapped.
Just another thought... I guess if you have lots of people sharing the food it wouldn't be so bad if you know that bag of chips will be done within a day or two, but for a single person like me, where it may sit there a long time, it's definitely very important to make sure that the bag is closed!