Aside work, the PC has become little used since I got my first Android phone back in 2010. In 2009 we bought a high spec PC for games, this is mainly used by the wife and kids to play the Sims and its hundreds of expansions
That said, we also use it as a bedroom TV given the internets access to pretty much everything TV nowadays. My old PC, which still has enough juice to run most things except games, has been consigned to the garage.
I still prefer the PC for internet banking, which may change, but as long as I have a decent phone, this is my main source of daily net access. I recall not liking the idea of charging a phone everyday, but then I realised this was using so much less power than a PC being on for a few hours that battery life was pretty much irrelevant.
The PS3 has also steered away from PC usage, PS+ is our main source of gaming outside of the Sims and with Netflix, Lovefilm, blu ray etc we're also covered for extended TV access.
I think there is still life in the PC, but as mentioned above, if you buy a decent spec, its going to last you a lot longer than it did a few years ago, I suspect this is why Win8 has the metro UI to try and push a new type of PC with touchscreen.
We bought our daughter a Laptop for school last year, which she does use a lot for homework, but she doesn't use it much for leisure, in fact, she's already after a tablet this year.
I think the PS4 and NextBox (good phrase
) have to pull something new to the table other than just better graphics, otherwise they are going to struggle against free to play or the 69 pence games on smartphones. Personally, if Sony continue with PS+ and market it correctly, they are on to a winner, its currently superb value with great content.
One thing I've noticed is that Nintendo is not flavour of the month at all. We have Wiis, DS's and the like, but the DS has been battered by the phone and tablet market and its almost pointless for us to look at buying our kids Nintendo games. The Wii U looks like its not going to help them either, especially if Sony and Microsoft get there act together.