For survival use go ahead and make fire.
For regular camping, many places (National Parks - I've done a LOT of backpacking in RMNP) don't allow fire.
Does that change the equation for you?
Thats what Dakota fire holes are for

; Seriously though I don't frequent Park lands much, but I would gladly pay a fine to the oligarchs, than be deprived of such a nessesity. Not promoting an illegal activity, just stating a point of fact. Everyone has to draw the line somewhere.
PS (Doug feel free to censor me, lol)