My 10 reasons:

1. You coudn't resist the price
2. new disruption approach( Blockchain)
3. usable
4. transaction posted publicly
5. Anonymity
6. secured, encryption
7. fund transfer low fees
8. Coins generated has limit (High Demand)
9. Decentralized nodes
10. make profits

Of course it is still you who will decide.

Risk? its up also with you how to minimize it, or possibly mitigate it.