Of course theyre so efficient because they pay badly, ruthlessly exploit staff, haven uestionable HR practices, actively resist unionsnin the workplace, use limited packaging sizes to save on time and storage, charge their drivers for the use of the vans they use for their work (imagine the outcry if posties, DPD drivers or dustmen had the cost of their vehicles deducted from their wages?) and shuffle profits around the world to favourable tax regimes.
Their unethical behaviour is what makes them so efficient - the two are inextricably dependent upon one another.
So I refuse to use them as I have some tiny vestige of a social and environmental conscience, and pay all my taxes without demur.
Conversely, it bothers Mrs B not at all and she merrily orders stuff and marvels at how efficiently it appears on the doorstep.