Why do you think Thomas is so adamant about not being sent home?

Thomas is likely adamant about not being sent home because he feels a strong sense of responsibility to his friends and the challenges they face together. He may believe that staying in the Glade is crucial for uncovering the truth about their situation and finding a way to escape. Additionally, Thomas could fear that returning home would mean abandoning the bonds he has formed and the progress they have made as a group.