In an ideal world I probably would actually have a small form factor PC tucked away out of sight, linked up to the TV and have it boot straight into something like XBMC or Hyperspin (The Windows front end to control and run all emulators from) but I've read up on it and it all just seems so confusing and probably out of reach for me setting up wise.
Also, I love low electricity bills
and seeing as this Nvidia Shield has a quite ridiculously low power consumption ( in the UK, we are talking about ?4 for a year based on 4 hours usage every day (which is believe is about $6)) Thats another major selling point to me. The fact that it more or less pays for itself over the period of time that its deemed relevant in terms of power.
Like I said, if I used it primarily to house my film collection, and then any 4K films that appear, the device in that respect is timeless in its usability. If I also wanted it to sit there with full romset collections of all the old consoles, MAME and maybe things like PSP, PSX, Dreamcast, N64 and possibly one day, Dophin, again, its pretty much timeless in that it will always run those systems. It would only really become obsolete when Android (well IF) start to release games which the X1 isn't capable of running. And seeing as big budget games are not likely to be on the radar anytime soon, I cant see how it would become obsolete hardware for well....literally years.
Also, if the streaming side of things does by some miracle turn out to be the next best thing (which by the way, I have no doubt will be close to terrible in the grand scheme of things), then it will play top end PC games until the device breaks, so long as I'm prepared to pay subsciption costs and Nvidia keep their servers up to scratch.
So with those points in mind, I think it represents fantastic value for money and a sound long term investment.
but as with everything, I guess its all about preference isn't it