Mentally ill people need treatment and confinement so they do go and get themselves killed or hurt others.
They ARE mentally ill. Need to be locked up.
Call it what it is.
Body Integrity Identity Disorder (BIID) https://pubmed.ncbi.nlm.nih.gov/19132621/
What is apotemnophilia?
Abstract. Background: The syndrome of apotemnophilia, body integrity or amputee identity disorder, is defined as the desire for amputation of a healthy limb, and may be accompanied by behaviour of pretending to be an amputee and sometimes, but not necessarily, by sexual arousal.