Bitcoin's popularity stems from its potential for:

1. *Investment*: Some see it as a store of value or a hedge against inflation.

2. *Cross-border transactions*: Fast and low-cost international payments.

3. *Financial inclusion*: Access to financial services for the unbanked.

However, Bitcoin also faces challenges, such as:

1. *Regulatory uncertainty*: Varying government stances.

2. *Security risks*: Potential for hacking and theft.

3. *Environmental concerns*: Energy consumption for mining.