Being frustrated over a problem or a series of problems is a normal thing. It sounds like you are fully engaging yourself, so I would not quit. There are valid

Being frustrated over a problem or a series of problems is a normal thing. It sounds like you are fully engaging yourself, so I would not quit. There are valid reasons to quit, but I don't think this is one. You won't believe the amount of crappy code you will see in your career. I won't even touch or go near any PHP codebase for example.