That is the kind of stuff that keeps me from enjoying Civ. The AI just makes no sense on so many levels and its easy to beat once you get past the early game. That is like the only place you will lose. Once you get several cities established and defended, you have won the game. It doesn’t matter if you are still in the stone age, you have already won and its just a matter of time.
It makes matters even worse when the decisions the AI makes are incomprehensibly bad.