I've always been a charcoal guy, but as I'm thinking about buying a new grill I've looked at gas grills, with the convenience of cleaning, speed etc.
But I still can't help to think a modern oven would be able to fulfill a lot of what a gas grill can do (oven broiler plus convection at maximum temperature).
There is no flame, and the heat is from below - but how much does matter?
Disregarding any non-food aspects (pollution, being outdoor, having a beer while grilling), how big are the differences?
Edit: Commenter moscafj below wanted some things clarified, he was spot on. My initial thought was to buy a charcoal grill, and for most other stuff use oven. I've had some thoughts about gas, but I always feel that it's just an "outdoor oven with an open flame".
Thus, I'm now comparing a standard outdoor gas grill to a new indoor domestic oven (with all the bells and whistles I can get).
The "drippings landing on hot bars" I've heard about, but that's basically the only thing.