Beware! SLR autofocus is just as treacherous as a built-in meter. Just point the camera at the subject, autofocus, and shoot. Exposure taken care of automatically; focus taken care of automatically.
But just as unthinkingly centering the meter needle may not produce the exposure you really want and need, focusing on the subject and shooting may not give you the picture sharpness you want.
Surprised? If the AF says the subject is sharp, isn't it? Yes, it probably is but how about the rest of your picture? How sharp should the foreground be? The background?
If you're a snapshooter, maybe front and rear sharpness don't matter at all (although posing someone in front of the Lincoln Memorial only to find the memorial quite fuzzy ought to upset even a snapshooter).
Certainly anyone calling himself a photographer ought to try to control sharpness as needed. But you can't do it by constantly autofocusing on your subject and letting an automatic program exposure mode do the rest.