No, we don't. We've got enough oil in the US to last us about 250 years at our current rate of consumption. That's not even considering what we've got underground.
Think of it this way... Oil, is power. Everything around you depends on oil. From the chair you're sitting on to the food you eat. Doesn't it make more sense to use up the natural resources of other nations before our own? One day their oil will be gone, and if we still live in a world that depends on it, we'll once again have reached a new high in power.
They prostitute their economy to us.
EDIT: I just noticed your nationality. Sucks to be you.
This thread is a chain of yes and no's. And we currently do not need the oil.
If you say we dont need it, you most likely arnt 16 and own a car that you pay gas for. Gas prices would be so high without foreign countries letting us steal xD