I have been playing almost exclusively because of this. Even if my other lanes do bad, if you make it to late game you still have a shot as vayne.
unless you get lmao stomped in lane, as long as every other lane doesn't feed you have more of an ability to impact the game than anyone else there. after that it's just making sure you're up in farm and you don't get caught and it's a win more often than not.
kog maw is good too for the same reasons but people are terrified of not winning their lane so they play garbage late game adcs like Caitlyn in droves and then complain when they can't carry
http://i45.tinypic.com/jrfwjl.png "The Lakers traded their picks for a 40 year old hobgoblin." - bond21