The short answer is I utterly lacked financial and personal discipline to insist on warming up a can of soup.
Long (beta) answer is that we had gotten back late and had decided on pizza. The size wasn't specified, so I assumed these would be pretty darn big, ie: lots of leftovers for later. But NOPE, just "medium" sized, so in the end a total ripoff.
Since then we've ordered out twice ( I know, I know...), *trying* to be frugal.... and you can't win. Nothing is even moderate price anymore, and what's just slightly expensive has portions seem to be for small children, at least if you want meat.
So now we just try to keep a big tub of plain yoguhrt in the house, so if we end up ordering, we just get one dish, and supplement with yogurht and fruit. It's actually not a bad system.
Got lots of canned soup I have stocked up for emergencies. Spam, Tuna, etc... We are starting to use that stockpile a bit more. Also to be clear, overwhelmingly we cook our own food.
But lest I get judged too hard, this is still a ridiculously new paradigm that am not accustomed too. I didn't grow up like this. I make a LOT more than my dad did at his age, and I can't afford as many small pleasures as he did. LIKE PIZZA!
It's reality and I'll adapt, hopefully thrive someday (bitcoin? lullzz....), but just seems to have crept up fast.