I believe the question you posed about whether or not students care about feedback is important and worthy to explore. From my personal experience I can tell absolutely yes, there are some exceptions nevertheless. Thinking about myself as a student and my experience as teacher, I think if student sees her teacher as an individual who cares about her success, she would express more willingness to care and reflect on feedback; though the quality and extent of feedback is completely different issue that may influence this process. Also I remember students who reflected on their experience with me and explicitly appreciated the feedback in teaching evaluation.