hi :0
My two cents, depending on your definition of normal use. I have now decided that there is no such thing as normal use with DSLR....:ugh:
Unless you are with a nikon, maybe, with some bazillion points AF, point, shoot. Even then i doubt it.
As you use your camera more often, you'll start shooting RAW, you would start post processing your images, and so on and so forth.
In this case, the definition of normal use becomes the use at which you manage to take your best photos at. And in that case, I leave less to the machines (Auto focus points), and more to the human (centre point). If you are shooting completely auto, cant be bothered or have no time to fix your focuses, sure, select 11 AF points and shoot away. You will get some keepers.
If you have more time, select centre point, choose live view. You will have more keepers.
I think the question is when. If i were to shoot street shooting, i guess i wont bother manually focusing. Shoot from the hip, shoot quick, and dont waste time focusing. If i do posed shots, i would never leave focusing to the camera.