right wing moralists view friends as a means to an end... if a friend becomes a drug user, he no longer has anything to offer the RW moralist, so the RW moralist abandons the drug user.

Left wing moralists are looking for someone who will love them more than the LW moralist gives love in return, and then devise a way to make sure that person can never leave them.. this sort of commitment the LW moralist demands scares off potential partners. The potential partners perceive their 'clinginess' as a sign that they are weak and have to leech off another person