I've already fallen in love with the tighter privacy permissions. For example, I no longer have to give apps an all-or-nothing access to my pics. This is a gamechanger because I bet a bunch of apps scrape the geodata from pics to harvest your location history, and now I only have to give them the ones I want to give them.
As a concrete example, I've been running the iOS 14 beta for the last week and a bit, Facebook Messenger previously had full access to my photos, and when using it for the first time I got a message from the OS explaining that I no longer needed to grant it carte-blanche access and whether I'd like to deny it access, pick the photos I'd specifically like to give it access to, or let it continue having full access.
What iOS apps (that you've given access to your photos) can you have any confidence don't do this?
https://www.engadget.com/2011-01-09-the-gpl-the-app-store-an...
Many apps including Discord repeatedly snoop the clipboard/pasteboard even when I don't paste anything, and wouldn't know about if iOS 14 didn't alert me.
Then there's the major apps secretly accessing the camera and microphone, exposed by the green/orange indicator light in iOS 14:
https://www.macrumors.com/2020/07/25/instagram-unexpectedly-...
Surprise, these are the people fighting against Apple.