For sake of argument, why shouldn’t you?

What if an airline wanted to charge by the pound? Or by the cubic metre? “Identify how you please! We just move matter. If the matter requires oxygen, water, or 2.5 pretzel sticks, we will gladly sell that too! Looking for extra savings this summer? Try our new sweat lounge! Your precious bodily fluids are fungible, so sweat them out now and reconstitute when you arrive!”

For what it’s worth, I’m very very strongly in support of socializing things like this and would prefer to live in a community that is of the leave a penny, take a penny mindset.