Disagree, if you have a cheap burger, you will be hungry 30mins later (as well as feeling like s***
If you have been brought up on frozen burgers, pizzas, pies and oven chips, then you will be satisfied and not know the difference. Trust me, I know many many people who do this. They can't conceive of cooking vegetarian food from scratch any more than you can conceive of living happily on burgers and chips.
My dinner tonight, which took me less than 5 mins and zero skill to prepare this morning
It did take skill. You had to know what to put in your slow cooker, how to prepare it, and how it would all react in what kind of cooking. You know stuff without realising it.
I know the rudiments of cooking but I had to figure it all out myself, and it involved a great many awful unappetising meals and a fair few that were inedible and had to go in the bin.
When you've been working all day at a factory, you've got whining kids who won't eat, you're exhausted and don't know how to deal with them, but you know they'll eat burgers and chips, it would take quite a lot of effort to plan a meal, cook, to wait til it's done and try and get the kids to eat it.
Cooking meals is not hard IF YOU KNOW HOW TO DO IT. If you don't, it's a mystery.