I can't function without it. I feel like I left the house without my watch, wedding ring, a belt, and I'm wearing two non-matching shoes.
Gmail is both my non-business primary email account, and how I communicate with most people in my life via chat. Got some stuff going on with one of the houses that I need to refer to an email about.
Also, YouTube (owned by Google) is down, so it's time to start eating parts of your own body to survive.