I know this is just a poll - but I do have to mention, I don't think the result will have any meaning on the discussion that sparked it. Because the question isn't the right one asked.
IMO consumer behavior is a tricky one. Many in this poll will probably (most likely) vote that indeed the amount of games they've picked up since 2010 that are older than 10 years are close to none. That doesn't mean however that they wouldn't do it, if it were more convinient.
It's the same with me: I have a lot of games that I want to get back to, mainly games from the PSone and PS2 era, but also some classics that go back to SNES days. I admit, some of the games would probably shock me if I went back to them, merely because the nostalgic memory in my head will be different than when I put in the game and see how pixelated everything used to be. In fact, this is exactly how I felt when I put in Tomb Raider 2 the other day and even on the tiny PSP screen, the game is far more pixelated than any recollection I had in my memory when I was stunned by its beauty back in the day.
Anyway, the point being - if it were convinient to actually boot up those old games on my current systems - I would. Humans tend to be lazy beings though and so, even if I find myself drooling over watching Youtube videos of old games I used to play on the Amiga, actually getting up and booting up that 20 year old machine is not something I will likely ever do. However if I had a comfortable means to boot it up and play some of those classics on my PS3 by the click of a button - I would.
Then there's also the point to be made, that graphics have progressed to a point where the transistion between this generation of consoles and next will be a lot smaller, than they have been coming from last generation to this - or PSone to PS2. I think the main reason for this lies in resolution and image quality - not geometry or complexity. The incentive to play my current generation games on the next generation system thus will be a lot higher for that reason. Because Super Stardust HD or any other Pixeljunk games will be just as cool and technically impressive in 5 years time because those games don't rely on complex gameplay mechanics and the main feature - them being in 1080p will still be adequate in 20 years time (even if by then we will have resolutions beyond crazy). Why? Because I'm already playing my 1080p (or 720p games) on a big 3m diagnonal beamer projected screen that is above what most people use. It's sufficient enough - and even I were to up the resolution to 4K, while the picture would be undoubtedly more detailed - the difference wouldn't be that much.
It's not like 10 years ago when we went from CRT to LCD big screens, from SD to HD resolutions. It's comparable to having a 720p screen on my smartphone. Even if 1080p is around the corner (Samsung Galaxy S4 compared to my S3) - the benefit on that 5 inch screen will be small - heck, I'd call it overkill.
So, I do think there is demand for legacy - just not the legacy from 10-20 years ago, but the legacy from this generation when we will be playing next generation or the generation of consoles after that.
Also, people like to have the option, even if we don't use it. Having the option is always a lot better than not having the option taken away from us. People will always want, even if they end up not using it. Is it practical? No. Is it human? Probably yes.