How difficult is it to shut off iCloud?
I have an M4 iMac and M3 iPad Air. I will try to keep this short and to the point. Although I have been using Apple computers for decades I have never had 2 Apple devices at once and thus never used iCloud. I am still learning iPadOS. Apparently, without me knowing it, when I initially set up the iMac and iPad, it created an iCloud account for me. On the iMac I went through all the iCloud settings and shut them all off, as I always do when I get a new computer. On the iPad I forgot to do this so apparently the iPad has been syncing to iCloud without me knowing it. I have always been a light computer user. Mainly I use safari and occasionally mail. Most of the apps on my computer I have never used even once. I do keep some documents or photos on my computer which I would rather not lose but if I did it is no big deal. I guess since I already have an iCloud account I will jump in with both feet and turn on all the apps on both devices and get an iCloud email address. I understand if I take 10 pictures with my iPad, with me doing nothing they will just appear in photos on the iMac. Likewise if I create a note on the iMac it will just appear on the iPad. I read some of Apple support and watched some YouTube videos and I understand if I were to go on the iMac and delete 5 Pages documents they will also be removed from the iPad and from iCloud itself (except for the 30 days to restore deleted files). So 6 months from now if I decide iCloud is just too much of a hassle to manage and I want to completely get out of it what happens? Do I just go through settings on both devices and shut off icloud for all applications? Do I "sign out" of iCloud on both devices? I assume on the day I do this both devices will have almost identical data since they have been syncing for 6 months. Does all of my data, files, photos, settings, go "poof" and is gone off both my devices? Or do both devices retain everything that is on them and I go ahead and just continue using them as if I never used iCloud and the only difference is from that day on any additions, deletions, or changes I make no longer sync to the other device?
Also one YouTube video I watched said if I create an iCloud email address it automatically becomes the email address for my Apple ID account. Is this true? I would rather just keep the email address I have now.
iMac (M4)