Apple

I used Android from 2009 (HTC Dream) until 2021 (bought an iPhone 13).

I switched to iPhone because:

• Android (and Google as a whole) is an ecosystem that pays its bills by giving 3rd parties access to your personal information, and because of this Android will never offer privacy features that iPhone does
• iPhone offers far better privacy and security features
• The vetting and security that Apple puts into the App Store makes me more comfortable. The Google Play store is a cess pool garbage apps that have serious privacy concerns that Google is very slow to respond to
• iMessage is superior to RCS

However, there are some factors that make Android better (based on features alone):

• The fact that everything you download is just treated like normal "files" in the phone's file system. You open your file explorer, and you can access everything (iPhone's silly distinction between things that live inside "Photos" versus things that live inside "Files" is extremely stupid)
• Being able to side-load apps that you manually download on your own as APK files means that you can do things that Apple doesn't allow on their app store. Like video game emulators
• Android allows other web browsers. All 3rd party browsers on iPhone are actually just reskinned versions of Safari. Android allows entirely different browsers that are built on their own technology. This means that you have access to browsers with plugins that offer you more advanced features
• Android allows the installation of custom "Launchers" (a replacement for the UI of the home-screen of the operating system), which offers more customizability.
• Keyboards vary from brand to brand on Android, but all of them are lightyears ahead of iPhone's trash keyboard