Taxi Driver: How was Travis Bickle not sent to a mental asylum at the end?

Taxi Driver: How was Travis Bickle not sent to a mental asylum at the end?

More about Taxi Driver: Was Travis Bickle lying about serving in Vietnam?    • Taxi Driver: Was Travis Bickle lying about...   Why did Travis want to kill Palentine?    • Taxi Driver: Why did Travis want to kill P...   Why did Travis Bickle break his TV?    • Taxi Driver: Why did Travis Bickle break h...   How was Travis Bickle not sent to a mental asylum at the end?    • Taxi Driver: How was Travis Bickle not sen...   Taxi Driver and the Vietnam War    • Taxi Driver and the Vietnam War