Koontz - So someone needs to tell me if all this window retrofitting is worth the money.

I've looked up reports, and they deal with factors that only an engineer would understand. Theoretically, there's a difference. Do clients' ever realize that difference in heating/cooling issues, (and bills), and/or in noise reduction?

I certainly get the change in ease of operation-but am unconvinced of other benefits. Someone tell me I'm being old-fashioned...is it really worth it???