Can you please explain why cutting is bad if nobody else but me is getting hurt by it?

First - you matter.: Even if it only hurt you - that matters. You matter. Self inflicted mutilation by cutting is one way that some people cope. It is not a healthy coping mechanism. People may cut themselves because they feel emotionally numb & it allows them to feel something. Some cut to distract from anxiety, depression or stress. Some people cut as a form of self- punishment. Some cut in the mistaken thought >.