It’s difficult to get China and India off coal because they’re doing most of the world’s manufacturing and some processes are currently impossible without it. But ‘we’ exported manufacturing to Asia and ‘we’ buy the products the coal is used for. ‘We’ don’t get to wriggle out of responsibility by pretending that a couple of low and middle income countries are somehow responsible for ‘our’ excessive consumption.

Probably not unethical if the people they were stolen from can prove they didn’t sell them (which may be a big if for some hacked accounts) or are definitely rich enough not to be adversely effected in any meaningful way regardless. But it seems you wouldn’t be able to use them for anything that requires ID anyway:

Obviously, stolen airline miles aren’t usually spent on actual airfare or hotel bookings—purchases that require proof of ID.

But many reward programs allow account holders to redeem points at local retailers, often through gift cards. In March last year, for example, Air Miles alerted members that points stolen from members were used to buy products from participating retailers. Members aren’t required to enter a password or PIN number when spending points, and retail staff often don’t ask for an ID. Due to the lack of verification, frequent flyer miles have become a profitable target for hackers and thieves. And because most of us don’t use or check our frequent flyer accounts very often, the theft can go unnoticed for months.

The dose makes the poison. It is carcinogenic but current estimates are that you’d need to drink several litres a day to meaningfully increase your risk.

There are other good reasons to find a healthier drink but this isn’t one of them. Most artificial sweeteners have some kind of risk attached so there is no point switching to a different diet soda.