What should the ATR be for a stop-loss?

When it comes to determining the optimal Average True Range (ATR) for a stop-loss, the question begs for a personalized approach tailored to each trader's risk tolerance and investment objectives. Could you elaborate on the key factors that should be considered in setting an ATR-based stop-loss? For instance, how does the trader's risk appetite influence the choice of ATR level? How do market volatility and asset characteristics factor into this decision? Moreover, how should traders adjust their ATR stop-loss levels in response to changing market conditions? Understanding these nuances is crucial for effective risk management in the volatile world of cryptocurrency trading.