Why Worry About Libyan oil?

Why are people worrying about libyan oil. Their oil is of no use to them they can't eat it they can't drink it, it is only any use to them if they sell it to us. Yes they might put the price up per barrel but the price per barrel is reasonable really, the main problem for us the the disproportionate amount of tax our thieving government puts on the cost of the oil/petrol