There are other good reasons to have the profile created but I stumbled upon a new one today. If you complete your Google Profile and include your birthday information, something special happens...
Today, I pulled up my browser and saw this:
|Google throws a birthday party for ThinkHammer.|
My profile page was streaming with decorated animated confetti and it included a fat free, calorie free, cupcake! By the way, if you follow the link, you see neither the confetti nor the cupcake. I would guess it's a privacy issue.
Thanks Google! I enjoyed my private birthday party. It was an unexpected surprise.