Because Spuffy hits quite a few of the same spots as J/S... [at least when it's done by goodficcers like KnifeEdge ( [link]
[Someone pointed out his scar is on the wrong eyebrow - sorry, but I had this one magazine picture of him pinned up on my wall my entire adolescence with it on that side and I cannot change that Head-Spike. (and hey, Sarah's hair parting is on the opposite side of how it is in the movie anyhoo.)]
Buffy... may yet show up.
And as to the matter of what season Spike this is and the chip business - Who's to say he's truthin' ? I'm thinking for a "post-canon" Spike, the chip gives him a good excuse to act decent if he chooses to hang out with "good" characters, and an ace to play when least expected.
Also, Christine's anti-vampire stance was briefly mentioned in the Wibsy club introduction - basically - (the whole blood-drinking and sublimination of sexual urges aside)... what is the classic vampire if not a murderous aristo [often Frenchman] in period evening dress with hypnotic-esque powers hiding away underground and being predatory around young girls...? Been there, done that, starred in one of the original Gothic Romance tales. (Also, too many badphics think making Erik a vampire is such an original awesome idea...)
This is a work of fanart and solely intended for shits and giggles. Not mine, not making money from it.
Spike aka William the Bloody (c) Joss Whedon, James Marsters, Mutant Enemy
Sarah and Jareth (c) Lucas, Froud, Henson; Connelly&Bowie
Based on the original Roommates comic by *AsheRhyder