By that logic we don't need a lot of things. You don't need nice padded seats - a bucket would work just as well. You don't need paint on your car. You don't need either heat, or air conditioning. You don't need a radio. You don't even really need 4 tires. Or seatbelts. Or airbags. Or windows that open.
But is it better to have all those things? Obviously...
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