Didn't we know this already?

Never expected that it would.

Are people really that impatient that they can't wait a few weeks to get the next gen version? Hell forget the time I just couldn't get a game knowing that there's a much better console option of it out there that I can get soon (whenever I would jump to next gen).

Stupid. I don't really see any reason to not make this possible, but there is no point in upgrading a few weeks later and restarting SP.

I will be waiting for all these cross-gen games

Well some people aren't getting one at launch .Some will get one in 5+ months from now. And some people can't wait like you can. 

Yeah I guess.  I don't know I just have absolutely no interest in buying a 7th gen game if I know it'll be smoother and bigger on 8th gen.  All these upgrade and carry over programs seem like a headache and extra transactions for the company that, if I were them, I wouldn't want to worry about.

Wasn't that obvious?

That involves them investing in more cloud-based servers to save your game data, no? Involves more security coding to make sure you don't upload some sort of offline-created altered files, no?

Allowing single-player would mean that they'd have you authenticate you via being connected to psn/xbl while playing single player...I feel like it'd be too much work/effort on their behalf to such a small amount of people buying the cross-gen games.

Thats stupid

This is why BC is important and should be standard IMO.