Only the foolish (Kshatriyas) controlling anger and joy, dwell in the woods. The very ascetics cannot maintain their lives without killing creatures.
विनीतक्रोधहर्षा हि मन्दा वनमुपाश्रिताः। विना वधं न कुर्वन्ति तापसा: प्राणयापनम्॥