Les Rosenberg Said:
"how to see iTunes library: [...]Do you know why? It seems like it would be to Apple's benefit to allow users to be able to compare songs in the store against songs already in one's library, to purchase missing songs, or to avoid buying duplicates. Also, when you go from the library to the store, it opens on the home page, not at the page you were at when you left the store."
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Seen as Unessential:
It's done to decrease CPU Usage and Virtual RAM consumption. Elsewise much may overheat.
Provide Apple Feedback on this:
- Go Here: Feedback - macOS - Apple
- Select: "Feature Request" for the "Feedback Type"
- Select: "User Interface" for the "Feedback Area"
- Proceed from there as necessary