Does Clem have a soul? Does Oz have a soul? Does Bonnie have a soul? Does Buffy have a soul?

This is brilliant writing, but I still hate Buffy. And it makes me mad that everybody's shunning Spike. It was her fault. She hurt Spike, and she hurt him on purpose. She damaged him, and I want her to admit that. If Spike had no moral compass because of having no soul, what's her excuse?