I'll step in here as a Licensed Social Worker who works with families that are abusive, and have studied in college the dynamics of abuse. Plenty of people who do want children and purposely conceived have gone on to abuse their children, often because they are repeating abusive patterns that were learned in their own childhood, or because of their own psychological issues, or because they feel entitled to do what they want with their children out of a sense of ownership or entitlement. There may be some who abuse because the child was not wanted in the first place, but abuse mainly occurs because that abusive pattern was learned in childhood.