My wife spends a lot of time cooking us meals for the week. In addition to having a ton of dirty dishes, we also have a ton of dirty tupperwear afterward, and a fridge packed with said meals all week. I want us to learn how to pressure can, so if she is going to spend all day cooking, it might as well be shelf storable food. Making extra shouldn't be a big deal. So now, in addition to having delicious lunch that I don't have to worry about *refridgerating while at work, we could build up a stock of food we'd actually eat as well.

Of course my wife is 100% on board for prepping and stocking up stuff, so I have it a little easier.

*I've gotten so sick of trying to share fridge space at work, that I haven't used the fridge for about a year now. I let my lunch sit on my desk all day, no matter what it is. I'm just going to nuke it before I eat it anyway. So far it hasn't made me sick, or even killed me.