> But there are heaps of people who're happy to pay exorbitant prices to have things delivered to them.
What's "exorbitant" is relative. Back when I was making not a lot of money, I'd go to the farmer's market and pick some of the nicest looking cheap tomatoes.
A few years afterwards, as my income grew, I just started going to the supermarket and picking what I liked. Someone asked me at home: "What was the price of those tomatoes?" and I didn't remember because I stopped checking.
> I can't imagine how much it adds to our carbon footprint!
And this is why we need systemic measures (i.e. regulation, national and international), not "personal responsibility". Either due to financial pressure or convenience, people's revealed preferences say that individually they don't really care about the environment. They say they do, because talk is cheap, but when they find out what they're about to lose to save it, everyone (99.999%) chooses what's cheaper or more convenient for them, personally.