Ramen seasoning packets basically are powdered bullion, plus herbs. I guess dessicated parsley is an herb. :P Plus they come in more flavors.

It is in there for morale, and to help with the seasoning of other foods. Give me a seasoning packet, say spicey beef, a couple of field mice, a bit of wild onion and a small cattail tuber, stick in coals in some foil, I've got good stew.