Yeah, no judgement here, when one is poor they gotta do what they gotta do, and ketchup is probably cheaper than decent tomato sauce in some parts of the world I would imagine.

That said, I am willing to bet that the same pasta but with actual prepared tomato sauce (that means put it on the stove, let it simmer, add some salt, maybe a bit of pepper or a pinch of chili flakes if you like, and a drop of EVO oil when it comes off the heat) in place of ketchup would be even better.

Although in your case, the ketchup recipe likely brings back happy emotions relating to your childhood which, after all, are also part of the food experience. Cheers!