Why was Maniac so intent upon returning Russell and Piper to their family?

Maniac was determined to return Russell and Piper to their family because he felt a strong sense of responsibility and compassion for the two young boys. He understood the importance of family and wanted to ensure they were safe and cared for rather than left to fend for themselves. Additionally, Maniac's own experiences with loss and longing for belonging motivated him to help the brothers reconnect with their family. Ultimately, it was a way for him to find purpose and make a positive impact on their lives.