Warning: If you use the Google Drive desktop app switching between accounts can be very problematic.
The second problem is that while YouTube does support multiple accounts, it does not integrate with the rest of the Google universe. So if you want to switch between your work and personal accounts on YouTube, you'll have to go through the process of adding your personal account separately on YouTube.
On top of that, YouTube doesn't play favorites with your accounts meaning there is no default account on YouTube. Whichever account you used last on YouTube that's the one you'll see the next time you visit the site.
Managing multiple Google accounts is admittedly a little messy, but for Googleaholics out there, it may be the best choice.
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