Since he knows everything that's ever going to happen, he already knows the answer to that. Which actually makes you quite optimistic if your religous, assuming we're alone in the universe, like some religous people do, as if we aren't going to do anything worthwhile it'd be hard to see why God would have bothered, of course if their are other species on other worlds then I guess a few glitches with the first experiment are expected, which makes me ask if God is perfect then why did he have a couple of goes at women before he made eve? Surely he's incapable of mistakes?
From my perspective generally it is hard to see why God would have bothered creating us though, complete waste of space really. Let's hope he wasn't just banking on us, I'm sure he's probably refined the process on other words and created races that aren't asshats, let's hope so anyway