IMHO, which is not worth much, there is as much art to cooking on gas as there is charcoal. Plus, if you think about what's in briquettes, it's kind of scarey.
Here is what Wikipedia says is in charcaol briquettes. "briquettes are made from a combination of charcoal (heat source), brown coal (heat source), mineral carbon (heat source), borax (press release agent), sodium nitrate (ignition aid), limestone (uniform visual ashing), starch (binder), raw sawdust (ignition aid) and possibly additives like paraffin or lighter fluid to aid in lighting them."
The above uses of wood chips work well for me, as does indirect heat to keep you from blackening things by accident. Plus, with gas, you can literally grill is rain, snow, wind, sleet, freezing rain, etc. And when Canada finally invades, you can rig the propane canister as a homemade bomb.