The popularization of cryptocurrency could lead to several significant outcomes:

1. **Financial Inclusion:** Cryptocurrency can provide access to financial services for people who are unbanked or underbanked, especially in developing countries.

2. **Decentralization:** It promotes a decentralized financial system, reducing reliance on traditional banking institutions and governments.

3. **Innovation:** Blockchain technology, which underpins most cryptocurrencies, encourages innovation in various sectors beyond finance, such as supply chain management, voting systems, and more.

4. **Economic Impact:** Cryptocurrency markets can be volatile, leading to potential financial gains or losses for investors and affecting global markets.

5. **Regulatory Challenges:** Governments are grappling with how to regulate cryptocurrencies to prevent fraud, money laundering, and other illegal activities while fostering innovation.

6. **Privacy Concerns:** Cryptocurrencies provide varying levels of anonymity, raising concerns about their use in illicit activities.

7. **Environmental Impact:** The energy-intensive mining process of some cryptocurrencies has raised concerns about its environmental footprint.

Overall, while cryptocurrency offers potential benefits, its widespread adoption will likely require addressing regulatory, economic, and technological challenges.