I have had several therapists over the last few years. There were two who genuinely seemed to care. So, I would say that is a good quality to have.
Also, I think they teach therapists to NOT react emotionally to what a client says. But I had one therapist that came across as being indifferent when another person in the group said she was tempted to cut herself.
I think a therapist needs to genuinely care, but to react appropriately, not indifferently.
Thats all for now.