I was gonna suggest there might be a "too dumb to program for the profit of others", but ... yeah, even if your pay and code is a financial detriment, we can pretty much promise it'll be an insignificant portion of the money that company is costing itself. You gotta eat, and practice is practice.

That said, advice remains the same: program on company time towards a path you don't care about beyond covering your ass and trying to deliver what's been demanded(I'm not saying don't do your best, just keep it to what you can do on the clock), and see that as practice for passion projects on the side. Save a little bit of that no-fucks-given/objectivity for objectively testing and fixing your code - fix it like someone else made the mistake, and you can do it better, but at the same time something must ship(don't let perfect be the enemy of good).