Where are our Rights??

A guy has 4 kids, plus one who he has brought up for 10 years. The mother has a history of drug and alcohol abuse, and also of going out for days and not coming home.

This has happened again, but only this time, the mothers sister has the kids and the father can do nothing about, as the mother was so sneaky as to not put his name on birth certificates.

Now where is the fairness in this??