If I were to eat only meals I feel like eating all the time it would be too much of mental hassle even if I could afford to purchase ingredients.
There definitely many times when I'm "I should use something from the freezer" or "I need to use this meat cut I bought a couple days ago."
Well, yeah, it shouldn’t be a surprise that many don’t like the actual acts of planning, prepping, and cooking, and would rather eat takeout everyday if it was nutritious and affordable enough, or have their meals cooked for them
EDIT: I struggle with this too and am trying to change my mindset to cooking being just something you need to survive, like brushing your teeth, and trying to enjoy it more from that aspect
As you cook you also learn a lot of shortcuts you can really get off with most of the time. Using lemon juice from a jar is really fine. You don't need to have that sprig of parsely. You can probably get away with using dried herbs rather than fresh for many purposes.
There are so many ways to tweak and "automate" this, much like the effeciency of software development tasks, such as finding pairs of recipes that reuse the same intermediate components, making things in batches that can be frozen and reheated, and just plain getting faster at making something from practice.
There is a lot to be said for making the same recipe many times rather than always trying new ones. Each time you make it you will get faster, and even better, more able to do it without thinking much about it, and keep thinking about something else more useful instead.
Pineapple fried rice here I come
https://www.youtube.com/watch?v=SGBP3sG3a9Y
P.S. The owner of the shop also makes the fried rice so you can compare the two slightly different approaches.
I've been mostly working at home (or traveling) for years now but when I was going into an office, a had a repertoire of quick and easy weeknight meals--and others that I could make on weekends and give me one or two meals of leftovers.
But once you're into it, that's simple, those are the nights you have leftovers, something from the freezer (made before), or 10-15min pasta & grilled vegetables.
(To be honest my problem is more not feeling like that often enough, so I always make something new and the freezer fills up. Also eating from the freezer comes with the problem of not remembering exactly what you did, if it's particularly good and you want it again...)
But while some planning and a little work is needed, stick to cheaper proteins (chicken/pork), vegetables, and things like rice/beans and home cooking, even for one, can be pretty inexpensive and doesn't need to mean eating the same leftover stew for a week.
I do think a lot of "cooking at home is too expensive" is actually "I don't want to cook at home and would rather just get takeout."
ADDED: And especially if you relax the cost constraint a little bit, there are a ton of meals I can make from unprocessed or minimally processed frozen food in about 15 minutes from freezer to table. Less than $10 for a meal is trivial--and can be significantly less than that.