Why did God create dinosaurs????
Ok, imagine you are (a) God and you can create anything you want. You see the latest action/horror movie on intergallactic television and think to yourself "how cool would it be to create an entire planet of monsters left to their own devices and pitted against each other in a bloody battle for survival".
So you settle down with a bowl of popcorn and create away and watch it all play out for a few hundred million years (i.e. about 3 hours on a Sunday afternoon for God) and when you're bored of it all, you think how awesome it would be to wipe them all out with a giant meteor strike.
The next day you have a brainwave and consider creating the perfect woman, and then realise that even for God somethings are impossible *** ducks for cover ***