Why can't I use my iCloud email address as my Apple ID

An Apple ID’s name/primary email cannot be changed from a third party email address to an iCloud email address (i.e. to the same iCloud email address that is already associated with/an alias for that Apple ID)?

That is insane from a user perspective! How is this even a thing?

Fixing this as soon as possible should be a priority for Apple.

I strongly encourage all who experience this issue to provide feedback to Apple here https://www.apple.com/feedback/icloud.html.

Contrary to what some people may think, feedback is actually read and taken into consideration by Apple. That's why it’s very important for all to provide feedback. If folks at Apple are made aware that this is a serious issue for enough users, that may well move the needle towards fixing this rather sooner than later.

To that end, I just provided the following feedback:

Subject:

Change Apple ID's name to iCloud email address

Feedback Type:

Account

Comments:

I would very much like to be able to change my Apple ID's name and primary email from a third party email address to my iCloud email address (i.e. to the same iCloud email address that is *already* associated with/an alias for my Apple ID).

Currently this not possible. I find this incredibly inconvenient and user unfriendly.

Many other users are experiencing the exact same issue and would also very much like to see it resolved as indicated in this thread: https://discussions.apple.com/thread/4434456

Please make it a priority to fix this issue as soon as possible.