Surely you've been on the Boards long enough by now to realize that this is a topic that will never be settled. It's a discussion that has been going on since Season 5 first aired if not longer, and has by now literally taken on a life of its own, not just here, but throughout the internet. It's in fan fiction, music videos, and untold numbers of fan websites, has been debated, argued, discussed, and just plain cussed. Graduate students have written papers on it, and actors have been identified with their characters to the point that everything that they have done since the series ended has been compared to their work there.
Decades after Buffy and Spike have married, settled down, and are bouncing fat happy grandchildren on their knees, there will be some stubborn diehards somewhere blindly clinging to the whisp of a delusional hope that Angel might still have just the slightest iota of a chance of taking Spike's girl away from where she was always meant to be.
It really amazes me just how stubborn and delusional some people can be.