I am not a massive game player (Although I do play the odd bit of Forza and GTA5) but forgetting the games I would say the Xbox One is worth it (Nicer if it was ?50 less, but then you could say that about most things) just as a home entertainment hub, I really appreciate this side of the system, for me it means one simple remote control for TV, receiver and cable box, for TV, also in my case Netflix and catch up TV from the BBC and other UK channels, music, pictures, ordering pizza and other stuff and then the games side is a bonus.
For once my very non technical wife is able to understand the entertainment system (Although using Smartglass is still beyond her), so much so I went and bought her one for Xmas.