If you believe yourself essentially immune to phishing and password leakage, I don't think that you are very likely to be convinced that you should buy a Yubike

If you believe yourself essentially immune to phishing and password leakage, I don't think that you are very likely to be convinced that you should buy a Yubikey. The place where they shine is when you have already acknowledged that you want (or have been forced by your employer to use) 2FA.