Yeah I know it's a multitude of issues; I just thought I'd point out a big one one that is often overlooked. I think the real issue with supply isn't that supply is actually running out (though it is technically) but that projected increases in demand (outside the US) are causing oil futures to skyrocket.

EDIT: Oh and I'm not trying to pretend I'm some sort of expert because I plan on majoring in econ; I definitely haven't learned enough yet to invoke myself as a credible source. I have done some reading on the subject, though, and hopefully am not misinformed.