I think the difference between Robsten and other couples and how long they last is it seems most people outside the Twilight fandom have pretty much always seen something "off" about their relationship, like it was never real to begin with. So no matter when they break up, there will always be that case.

Could they last another 10 years? Of course. But those blind items could be true and it could be done this year. We all just have to wait and see.