I've never read my own hospital records, and now it seems hopeless to even try to find them.
Have you ever tried to read your hospital records?
I'm too busy with stuff, and I work more than 40 hours a week.
It is very difficult to obtain old hospital records, but those are mostly for the hospital to use.  You should try to keep your discharge instructions secure and safe in a special location for as long as you need them. As for the records of past treatments, that can probably be found by employees at the hospital, so you shouldn't worry too much.
How hard can it possibly be to find them?
As long as you know the names of the doctors that have treated you, you shouldn't have to worry about that.  The hospitals have their own databases of records, and the documents that they gave you were just copies.  Most of that information was only relevant to you at the time.