If you have 2FA then some of those accounts may not be accessible without your phone. For instance, if I didn't bring my phone with me (which I use to authenticate) I wouldn't even be able to log in to my email.
Or, taken a little further, I don't even know my email password anyways. Its locked in a password manager which requires 2FA. I would myself be locked out of almost all of my accounts if I didn't bring my phone.