Chasers will say that they are interested in the group they target for a great number of reasons. The particular physical attributes, perhaps, or the assumed emotional or spiritual traits of the people they prey upon fetishize.
They’re lying. It’s been my experience with chasers that they are looking for only one thing, and that is the self-loathing and profound sense of worthlessness which is imparted by living in a culture which actively shames your body and your identity and your culture and all that you value. They are looking for someone who will be grateful for their attention. They want to take advantage of the fact that you are so used to being shit on that, they assume, you will do anything at all for the least shred or hint of affection.