Do both...there's great things to be made over an open fire....we did a campout a few months ago with the scouts...Caveman Campout....no utensils allowed. everything need to be cooked over an open fire.
I spit roasted a pork loin with Baked potato and corn on the fire in the husk...pretty friggin awesome
Camp stoves are great for Canned stuff...beans to go with the hot dogs, tomato soup w/ the grilled cheese...or Coffee in the morning...not that you can't get more creative.
I got a cast iron Wok...doing a Lo Mein and Fried rice 1st night of summer camp....if you can cook it at home you can cook it camping.
and in all seriousness....look into the dutch oven....they rock