I use an Apple device on a work device and I don't need to use Apple ID for anything. Apple laptop is the only device in the ecosystem. Apple Store doesn't hav

I use an Apple device on a work device and I don't need to use Apple ID for anything. Apple laptop is the only device in the ecosystem. Apple Store doesn't have useful apps for me, I rather use brew for installation, or I need to download dmg. I don't use Apple Music because I use Spotify with my friends. I don't use Apple Mail because we are in the Google ecosystem, so I use Gmail. I don't use Apple Calendar (there is such a thing?), because in the Google ecosystem I use Google Calendar and - for notifications in the tray - Notion Calendar. What do I lose by not using Apple ID?