Yes, and I grew up doing something like that (we used a coffee can). But you leave a lot of fire scars behind. With something like a Caldera Cone, there's no fire scar. There's nothing left but some very white ash, which can be easily buried.

Also, with a stove:
The pot is generally a whole lot more stable
Less wood is used (higher efficiency)
The wood is easier to get burning because of the enhanced air flow
Low heat cooking is a whole lot easier and more consistent

Just some thoughts.

HJ