It is a problem of being self taught on projects that only I would use, you would learn some very bad habits. Would also mean making code that you would look back on a few months later and have no idea what you were doing.
If it was for anything other than video games pre-online era, I fear the kind of damage it could have done. It was putting pixels on screen, not running online data bases or via monetary systems.
To that I say, I like the Ps2's/Gamecube memory systems that kind of didn't give a damn how many pointers you threw at it. I would also like to say I learned not to do this, I did not. I just don't code any more.