Everyone is treating it like a friend is about to die. That is weird. You should NOT be crying about the changing of the name of a department store. It is just a store where you buy nationally available crap. It isn’t like it is a boutique full of unique stuff. It isn’t like it is the closing of a manufacturer. It isn’t like you won’t be able to get the EXACT SAME SHIT at any number of nationwide stores. It is not like you won’t be able to walk through the SAME doors later and buy the SAME shit from the SAME people in the future. The door will have a different name on it. The credit card charge will have a different name on it. Your bag will have a different name on it. Other than that, it will be the same.
This should NOT be causing you pain, unless you are an employee, or somehow are otherwise involved in the company. Being a resident of Chicago and an occasional shopper is not reason to be sad. Seriously. You need more important things in your life.