I eat junk food. I treat my body like a trash can. Doesn’t mean I treat the environment I live in the same. I share that environment with other people. While I may be trash inside, I don’t extend that where it intrudes upon other people. I care more about others than myself.
I think you are wrong.
That is not true at all. If it was, I would litter everywhere, and my body freak, health-obsessed adopted sister would never have thrown plastic wrappers cheerfully out the window of the car. (She does not do that any more, we trained her to give a shit. Hard upbringing, from which our adoption lifted her.)