In Terminator 2, Arnold Schwarzenegger's character, the T-800, does indeed say, "It's in your nature to destroy yourselves." This line reflects a central theme of the Terminator franchise, which explores the potential consequences of unchecked technological advancement and the self-destructive tendencies of humanity.
As for whether humanity is headed in that direction, it's a complex issue. On one hand, we have made significant progress in areas such as science, technology, and social justice. On the other hand, we still face numerous challenges, including climate change, conflict, and inequality. The future is ultimately shaped by the choices we make and our ability to learn from our mistakes.
So, while it's important to acknowledge the potential dangers and pitfalls, it's also essential to recognize the progress we've made and the potential for positive change. After all, if a Terminator can learn the value of human life, maybe we can, too!