Yeah, we really, really don't need new consoles at all. There isn't much else consoles need to do. Having graphics improved to an extent you'd have to squint to even notice and shorter load times aren't worth forking out hundreds for and losing all online multiplayer and DLC I don't have installed for current-gen consoles.
Because that's something people don't seem to think about. Or at least not enough people. If there's a new console generation, there'll be a new online network for each console. When the Xbox 360 came out, the original Xbox Live was taken down, along with all online multiplayer and downloadable content, and nearly all PS2 game servers are also down. If PSN and the current Xbox Live go the same way when the next generation comes out, that means any DLC you have that you can't fit onto your console will be gone permanently, you'll never get full use from games with online passes or on-disc DLC, multiplayer-focused games that you paid good money for will become useless, etc etc. I know they might just use the current system or merge it in with the next one, but since they dumped the old networks when the new ones went up I'm not so sure. "We needed to get rid of them because of financial and compatibility issues" is too good an excuse for them to pass up.
I'm struggling to keep my eyes open right now so what I just said probably made no sense whatsoever, but you probably get the gist of what I'm saying.
Basically, no. I ain't done with my 360 and PS3. They work well enough for me.