Well, I did... but it was only cuz someone on YouTube made a video. I swear.
And I'm not sure how we got onto the topic of Angel/Giles/Spike, except as yet another example of how it would be weird to profane the Buffy/Giles father/daughter relationship. You don't sleep with your daughter and you don't sleep with her exes. lol.
On that note, I think we should get off the topic of Angel/Giles/Spike.
As someone said earlier, I can see a few positives for Buffy out of a Giles/Buffy ship. I mean, she would get to have an adult relationship. She'd be with someone who understands and accepts her Slayerness and also has something to add to that experience. She'd be with someone who would love her and treat her with respect. I mean, Giles is a great guy. All of the things that make him a good father figure to her would qualify him as a good romantic partner if the relationship had not gone the father/daughter route from the beginning.
I can't really see what Giles would get out of it, though. I mean, a relationship with a much-younger woman whom you know it likely to die soon? Even if Buffy weren't his daughter figure, I don't think Giles would go for her. I just don't see what he gets out of the relationship (aside from the obvious, which I'm sure he can get elsewhere just fine).