I used to love mine. There was a time (well, the calendar year 2012) where the Microsoft ecosystem really worked. I used an RT, Xbox 360 and Windows Phone 8 device for everything and they all worked together in a wonderful harmony. I loved that my mobile games counted towards my Xbox gaming records. The RT doubled up as a map when playing Forza Horizon and Fable 3 and it was genuinely useful.
Then they binned ARM, ruined WP8 with the sloooooow 8.1 update and (despite buying it for its media functions) the Xbox One was not what I needed.