I just spent a week on the road with my new i5 128GB (it just replaced my Surface 2). It was my sole machine for Word and Excel document creation, and email with Outlook (personal) and Outlook Web App (work). In the evening, during down time in the motel room, I would watch either Netflix or mp4 movies, or I would read a book with the Kindle app. Or, if I was in the mood, I would play Portal 2 or Bejeweled.
Desktop replacement? Nope, if I got rid of mine I would just build another, that's my hobby. But laptop and tablet replacement? Absolutely. I've felt that way since I got the original RT, and the SP3 just brings a whole lot more to the table.
I didn't vote, I couldn't sort through the double negatives. Consider this my ballot.