I dunno if I can agree with you here.
If you have never owned a 360 and find a stash of cheap discs in GameStop or in the attic - BC is good in that case.
If you have a large library of 360 games, it's a nice bonus to be able to clear some space up and still have access the games - again, BC is a good feature.

I play some 360 games occasionally, I wouldn't have played them without BC cos I gave my 360 away.
But I still had the digital copies and seing them appear in the 'Ready to Install' list gives me a warm feeling.

That being said, BC wouldn't make me buy a certain console over another.

Something something PC Master Race something something