You are wrong.
Why don't you just man the EF up and admit it?

Let's review....

Me: A licensed locksmith with years of experience in the field who posted this thread in an effort to educate bicyclists that have questions about which locks to buy and how to lock their bicycles.

You: Some guy on the internet who has nothing better to do than nit-pick in an effort to make himself seem intelligent.

I am NOT sowing paranoia. You are the one who keeps using this word. I am providing information. People are smart. They will take this information and use it how they see fit, or consider how it should apply to them in their area/circumstances.

For the record, I just checked, and we have 11 U locks here in our shop that were broken in bike thefts since september '08. 5 of these are 'gold' rated. We also file photographic evidence of the locations and broken locks for insurance purposes. I cannot post these photos because they are not my property and/or the claim is still in process.

To anyone that is 'afraid' to lock their bike up in the city because of this information:
You should be. At least a little bit. It's a city. Crime happens.
The best thing you can do is bring your bike inside with you and keep an eye on it.
Barring that, use common sense, use good locks (more than one, preferably at least two different types), and try not to leave it for long.
Do these things, forget about it, ride your bike and enjoy.
I have lived in chicago off and on for about 18 years. Never had a bicycle stolen.
Use your brain.