Not everyone does what they 'should'. Nor is everyone's definition of nice the same. No making new vamps, no making servants or ghouls, no murdering where you live. You need to eat, you do it discreetly and clean up after yourself. No bringing attention unduly on the rest of us.

[Spike laid out the terms, firm and still studying the other. He was actually really good at reading people. More observant and perceptive than most people gave him credit for.]