First its a decentralized currencie, there isnt a single person with plenty control to accept or not any transactions, its unlimited and anonymous, atleast to have an wallet isnt required documents.
Low fees, high security level, besides those all bitcoin does have a huge potencial to keep growing over time, and bitcoin isnt being used by 5% of people in the world, this makes bitcoin an amazing investment/reward with short, medium and long terms investments.