Over 80% of the petroleum products we use are used for fuel.
A very small amount of oil is used to make plastics. In the U.S. plastics are not made directly from crude oil, but from Natural Gas Liquids, Liquid Petroleum Gas, and natural gas.
As we move to renewables for energy production, hybrid and electric vehicles, the military exploring seawater for jet fuel, etc., the demand for oil will continue to soften. So there are plenty of other sources in places far from homes, like in North Dakota, that can supply the oil used for “stuff”.