OK. I'm a newbie.
The subject line delivers the question.
Well, it's really Lightroom 101 bud. There are a bunch of free and paid video tutorials out there for you to learn from (I even appear in some) and plenty of books on the subject so there's plenty of ways for you to learn to help yourself...
I would love to hear from one of the many professionals/graphic designers/etc regarding why Lightroom (and others) do not copy, save, and deliver in the "common" manner. I am guessing that certain professional equipment requirements may be dictating the strategy. Is that close? Or, is it simply to be different?
Well, again, Lightroom 101 bud...LR is a databased digital asset manager not a pixel editor like Photoshop. You edit the parameters of the image, not the image pixels themselves. As such, everything you do to an image in LR is automatically saved in the lightroom catalog. The only time you need to spawn off an image file is for use outside of LR...there is no reason to "copy, save, and deliver in the "common" manner". If you need an image to consume outside of LR, you either Export it or open the image in a pixel editor...
You need to do some learning and a forum such as this isn't a good place to learn all the basics that you need to learn. It's for relatively simple questions with relatively simple answers. The answers to your question will be self evident once you learn how to use the program.