What is it about BBQs?

We go to endless amounts of trouble outfitting our kithens and making comfortable places to cook and eat so why do we, periodically, light fires in the garden and char bits of meat over them?

I've been told it's because it's fun but, having spent most of last weekend projectile vomiting and the days since feeling decidedly below par as a result of attending such a function, I'm wondering who the fun is for.

Give me a well cooked casserole any day!