First of all, many parents don’t fully understand the harm it will do to the kids. That being said, some parents fear losing custody or visitation, some seek revenge, some confuse their own frustration with a relationship as meaning that the other parent is bad for the child, some are trying to force contact with the other parent, some want to be more important in the child’s life. And some are removing their child from real or perceived abuse. But even in those cases, the child faces the trauma of identity rupture and going on the lam with an emotionally stressed caregiver. Family abduction is always child endangerment, regardless of the parent’s reasons.