Funny you should say that. Just before getting my PPL, I did a checkride with our cheif CFI, and he got on my case for picking a wide open flat area (near a road, mind you), rather than choosing I-40, packed with rushhour traffic, as my landing spot. He said something to the effect of "You never know how long you'll be out there waiting for help."
I agree with him, to an extent. I'd rather kill myself and destroy the plane than kill myself, destroy the plane, kill numerous other drivers, and destroy many many cars during rush hour.
I placated him, but in real life, I'd probably choose the abandoned field.