they're only gas grills....
in my mind, a gas grill is simply an outdoor oven.
no place for an outdoor oven on my deck / in my yard / or inside the P1G.
A gasser gives us the opportunity to get the heat outside of the house and still enjoy a grilled meal, it's kind of hard to get a decent char with an inside oven too.
Also I don't see the need to fire up a charcoal grill for a ten minute hamburger cook the taste isn't that much different.
But to each his own.
Rich has some good points
I own a Genesis (2007) and use it mostly just for Saturday morning breakfast (bacon and hash browns on my Sizzle-Q) and the occasional hamburger. As Rich stated I dont see the reason to fire up charcoal for a 10 minute cook, especially when you are not cooking long enough to really taste the difference.
I see what Rich is saying in certain parts of this country conditions drive your grill choice, although I like coal better at times a gasser is my choice. When I have my performer at max, I will use the gasser to do bake potatoes, veggies ,or fruit items that do not impart much coal flavor, leave the meats those items to the coal grill. Or as said for a quick lunch gas is good.