The idea of "taking them home" is a metaphor.
They should all be placed in a secure online repository for you to examine and add annotations as necessary.
Lots of people know enough to know that they didn't receive a breast-reduction when they went in for an artificial knee surgery, but will find those errors in their records only if they actually see their records. And lots of less egregious stuff.
You'll also be able to tell when your doctor mischaracterized what you told him. Future doctors working on you when you're out cold should have the correct information.
Some people will actually have the knowledge to do something more with the data in their documents. The information can come in handy in other ways. For instance, I had a minor invasive surgical procedure while awake, and they gave me a sedative along with the local anesthetic, to keep me from freaking out in the middle of it. But I can never remember what that sedative was, although I recall it worked without giving me the slightest side-effect. That'd be something handy to have written down, say, in my smartphone, if I'm in a place where they need to give me something but can't get to my online records.
I bet if I went through my entire record I could find lots of examples of things I don't remember or never knew that any future doctor would find helpful but wouldn't know to search for even if he had my records.
The simple fact is, the only reason for you as a patient not to have access to 100% of the knowledge of your care is if the doctor wants to hide it from your lawyer. And that reason should be illegal, now that the technology for making your records accessible is all but trivial.