Yeah it is a hard trade off - waste vs efficiency. Sad to see waste generated but efficiency is increasing still, so the energy saving of replacing a device can be large.
I brew beer and a lot of people make keezer or kegerators (fridges or freezers to serve kegged beer from).
So often someone will find an old fridge or freezer and want to use that 'as it is basically free' - ignoring the fact that even a 10 year old fridge can use more than £150 a year in electricity (maybe more at current rates?).
I got a brand new chest freezer for £179 and when run as a fridge is uses £35 a year at current prices - so I'm saving money after the first year.
