[ Normally he would agree with her. It's never that simple even if he likes to think that a Slayer slays and a vampire... vamps, their symbiosis is so much more complex. Normally there would've been a chance of engaging conversation, discussion of the subtle nuances that is this whole bloody world they live in.
Knowing what he knows about his future, Spike refrains from doing so. Instead he scoffs. ]
Must be dangerous, livin' in a world without lines like that.