You: Honestly, does it have a purpose? Any purpose at all?
1. Banking and ownership.
2. Free payments and money transfers globally.
3. International remittances.
4. Cybersecurity.
5. Academic records.
6. Voting.
7. IoT (e.g. IOTA).
8. The music industry, and being fairer to artists in general.
9. Prediction markets (e.g. Augur).
10. The stock market, and decentralised exchanges like Waves.
11. Real estate.
12. Insurance (with oracles from cryptocurrencies like Byteball, using publicly available data).
13. Cloud storage (e.g. MaidSafe, Storj).
14. Supply chain management.
15. Provably fair mechanisms in gambling and decentralised betting.
16. Gift cards from small businesses.
17. Gun tracking.
18. Wills (feat. oracles and/or nLocktime transactions).
19. Charities and their transparency.
20. Ride sharing and Uber-like platforms.
Sources: my brain and
this article.