Still using Hotmail
I opened my Hotmail account around 17 years ago and still use it as my main email account through the new Outlook.com portal.
I'm the opposite of most people because I have a Gmail account I use to sign up for things I don't trust. That got so much spam at one point I opened another. In contrast Outlook.com's spam filtering seems very good - pretty much every item goes in my Junk folder and I never have to manually tell it that it's got something wrong. That seems like a fairly recent thing though because in the past it was truly awful at filtering spam (when it bothered).
The user interface seems better than Gmail to me as well.