I've never understood why people like well done meat. It stands to reason that the more you cook the meat, the more moisture you are going to remove, making the meat dryer and hence tougher and unpalatable. Get invited to a braai and let one of those bozos loose on the grill who picked up his basic cooking skills at the local crematorium and you're likely to end up with more than a burnt offering, you'll also run the very real risk of increasing your chances of getting stomach cancer.
We've known for a long time of the carcinogenic chemicals formed during the cooking process of muscle meats from beef, lamb, chicken, pork and even fish but it's not much fun tossing a tomato or two onto the coals and so we've tended to largely ignore what the doctors have been telling us but it seems that the risk is not so much red meat as the intensely high temperatures and prolonged cooking time . It really doesn't matter whether you cook over open coals, in a pan or under a grill, it's high temperature for prolonged periods that's the problem. Research indicates that having your meat medium to well done as opposed to rare will increase your risk of stomach cancer threefold.
So it seems that if you can't or won't limit your intake of red meat then you should perhaps look to a potjie for your Sunday lunch but if you really can't get by without standing around the fire, sipping cold beer and arguing about the rugby then cook your steaks rare or medium rare only - you'll actually enjoy them better, you know it makes sense. If chicken is your poison of choice then steam or poach it gently in advance, allow it to cool down in the cooking liquor and just reheat on the braai, once again it will actually taste better and you won't end up with a black exterior and a raw interior. For fish, wrap in a sealed foil envelope with herbs, a little white wine and butter if you dare and gently cook on the side of the fire. When you open the envelope the escaping steam will smell incredible and the fish will be divine. You don't have to forsake the braai, you've just got to cook more cleverly.