I played my first game to victory today (religious). It's a good game - it's pretty, it's complex, it's detailed, there's a lot to love - but the AI is shockingly bad at the game and that's a problem. Sure, you can hand it handicaps at the higher difficulties but that fundamentally alters the way the game plays. Fireaxis really needed to spend some time on improving the AI, and teaching it basic parts of the gameplay.
For example, in today's victory, after I converted Spain's capital it started sending out Apostles of my faith to try and convert my cities. That just doesn't work. The AI should know that and save its faith to built in unconverted cities.
I'm still very happy I bought the game, and I'll keep playing it but it should be better and - I hope - will be.