In Buffy fandom, if you suggest that Angel is Buffy's true love and their relationship is tragic and believable compared to the Masochism Tango of Spike and Buffy, the Spuffy 'shippers will hit you. If you suggest that Spike is Buffy's true love and their relationship was gritty and realistic compared to the hopeless and boring idealism of Buffy/Angel, the Bangel 'shippers will hit you. If you suggest that Angel and Spike had no interest in Buffy at all except for fighting over her because they're really in love with each other, the het 'shippers will hit you. If you suggest that neither Spike nor Angel had interest in each other and they both love Buffy more than anything else in the universe (including beer, pizza, chocolate and any ex-girlfriends they might have had long commitments with), the slashers (and a lot of people who prefer Angel as a series) will hit you. If you admit to 'shipping anyone with Riley Finn, they'll all hit you.
This was entertainingly summarised on fandom_wank as: Buffy spent nearly a hundred hours slaying vampires and around 30 minutes shagging two of them. Guess which caused more wank?