The same reason I like Computer Science and Economics.
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
The idea of a decentralised economy sounds great to me. Financial institutions need to have less power, imo.
I believe that Crypto-currencies like Bitcoin remove much of their influence, due to not requiring a 3rd-party, and regulations to work properly.
Truthfully, because Bitcoin has become a lot more popular, is why I'm here. If Litecoins had become more popular, I'd probably be more involved with them.