So I tried to redirect my Youtube account to send me emails to my Hotmail address today and got this:
"Your Google Account's primary email address is a Gmail address, and thus can't currently be changed."
So I can't log into Youtube without a Gmail address, and I can ONLY use Gmail to get updates from youtube. For a while I tried to avoid "linking" my accounts, whatever that means, but eventually Google forced me to choose between two options: use a Gmail account or give them my phone number.
Google is basically turning into Microsoft and Facebook combined, which is basically the worst combination ever.
Here's a quote from Google's CEO:
"I actually think most people don't want Google to answer their questions," he elaborates. "They want Google to tell them what they should be doing next."