Originally, I had a nice, easy password that I never forgot. Then I was obliged to pick a more complicated password that was an annoyance to type. Then I was obliged to pick a third, even harder password and use my email to sign in.
It was already annoying, because I have more than one email and couldn't always remember how to sign in. But on top of that, I just was hearing Edward Snowden mention that having to use one's email to log into a site makes you more vulnerable to hacking.
So how about thinking of reverting back to our handles instead?
The problem with usernames is that anyone can hack. Someone could try your username and then 'hack' your account on here - not sure why they'd go the hassle - unless they then get more of your details such as your email and then hack that.