Can crypto replace cash?

I'm curious to know, can cryptocurrency truly replace cash in our daily lives? I understand the convenience and potential for decentralization it offers, but there are also concerns about security, volatility, and widespread adoption. Is it feasible to envision a future where crypto becomes the primary means of exchange, or will it always remain a niche market for tech-savvy investors and enthusiasts? Additionally, what challenges must be overcome for this vision to become a reality?