I'm saying that lakes don't get saved when people virtuously choose to individually stop throwing trash into it: they get saved when the entity in control of the lake forbids throwing trash into them, and enforces that ban.
If leaded gas was still being legally sold alongside unleaded one, people like you would be passionately arguing for decades about why it's everyone's moral duty to pay extra for unleaded gas, and you would feel so proud every time you stopped at the green pump instead of the black one.
So your stance is feel free to keep doing things you know is overall bad for society until we bother passing a law and pushing enforcement to eliminate the activity?
I don't know about you, but if pumps had leaded gas and unleaded gas, I'd still be going for the unleaded every time along with trying to lobby for change. I'd absolutely be telling everyone I know not to use the leaded gas and try and change everyone around me to get rid of it. I would not just shrug and say "lots of other people are using leaded gas, I might as well as well, my use doesn't matter!" Meanwhile I guess your stance is to just use the leaded gas despite knowing how bad it is and telling everyone else to keep using it anyways until they finally tear the pumps out of the ground.
It's people thinking "my use doesn't really matter!" that is massive problem. Imagine how much easier things would be if people just did the right thing instead of assuming their actions don't matter.
Each rain drop isn't much water, they don't really matter. Yet floods destroy cities. Where does the flood come from?
If leaded gas was still being legally sold alongside unleaded one, people like you would be passionately arguing for decades about why it's everyone's moral duty to pay extra for unleaded gas, and you would feel so proud every time you stopped at the green pump instead of the black one.
And meanwhile we would all be breathing lead.