Same thoughts exactly. I personally started looking into indie game dev and I've just started to realize how naive I was and how hard just game design can be, and that I'll probably never be good at it, and that most of my ideas are pretty garbage (or incomplete at best).

Even with the perfect AI to write, one would need to iterate through many different ideas, play testing constantly, getting people to play test and analyze what they found fun and where they got stuck. And to get the best ideas you'll need to be playing lots of different kinds of games.