what goes around NOT always comes around

i was jus sittin and thinkin that how important somethings are but are least respected by us.
talking on the context of environment, how often do we meet people tryin to do somethin to save d precious oxygen. I'l talk about myself only. i never think of doing anything to save the precious oxygen. But if the breath i take happens to be the last breath of oxygen then for the next breath i'l pay anything in the world.
Respect the thing that matters no matter if it is in abundance, because u never knw when you gonna run outta it and then life changes and it becomes hard to go on.
justin says what goes around ,comes around.
i really dont think so.
so take care