I will give YOU an example of unconditional love...and you can decide if I am mentally ill Sol.
When I was 19 I was violently raped. I won't go into the details...but, it went on for some hours. In the end, I ended up stabbing the rapist with his own knife. Even after everything he had done to me I still took pity on him as a human being. My love for humanity outweighed my fear and hatred of what this person had done to me. I helped him.
Do I regret that? NO. was that showing unconditional love for another human? Yes. Was I mentally ill? NO would I do the same thing again? YES.
Now you can come up with any screwed up ideas about what is appropriate and what isn't...I really don't care. I would do it again. THAT is unconditional. This has nothing to do with what justice he deserved for what he did, it had nothing to do with revenge. I was not willing to loose myself and my identity as a human being to this person. I LOVE myself....unconditionally.