And I don't care if my browser is compromised, since the attacker would only get access to an empty VM on Qubes OS.
And yes my mail account is more critical than my local files.
I open my email in a dedicated VM, so only my email provider could attempt to compromise me. Attachments are automatically opened in another, disposable VM.
Also my email account and everything normal I do, is part of my normal life and it's very helpful to be normal.
If I would ever do something out of the ordinary and want to do something which requires physical access, it's much easier to travel the world as someone who has a normal Internet profile.
My personal data is protected enough on Gmail and gdrive.
Everything else just doesn't exist anywhere.