A stove concentrates the flames in a smaller area therefore burns hotter and more efficiently. Also in some areas you may not be able to have an open camp fire or it may not be convenient to build a fire. In addition you can use twigs and small branches instead of logs so it is more expedient. I'm one who likes my coffee first thing in the morning, I remember one time trying to boil water on a grill over a camp fire, it took forever, I wasn't a happy camper (pun intended) Most of my fellow campers that had to be around me were not happy either.

Blitz