Fuel stove, MSR Jetboil something of the sort. I use white gas and refillable canisters. Food’s faster, I’m lower impact. I love a good fire but it’s not what mother earth needs every night right now.

Okay her me out, yes a vegetarian diet, but also an earlier bed time. That way, in the morning you wake up feeling more rested. Then, because you never mastered fire, no big brain. No big brain, no jobs. No jobs, no climate change. Checkmate atheists?/s

Cook on a stove. Way easier and quicker. Without a fire you'll see/hear more wildlife. You won't wake up with smokeface, puffy eyes, everything smelling like smoke. In my experience most camping injuries involve fire/firewood gathering. If backpacking, without a fire you'll save a lot of energy. No holes in expensive nylon gear. I know going without a fire is sacrilege to a lot of people, give it a try sometime

Without a fire you have a better chance of seeing/hearing wildlife. For the record, most of my camping experiences are wilderness backpacking. I typed out more reasons in another response in this thread.