Ideally Bitcoin is useful because it's a solid way to store your wealth. But still today in 2016 there is no proven way to fully secure your bitcoins. There is no consensus on how to keep coins safe and not getting coins stolen. This is a fundemental problem for me and until there is a universal consensus on a sure fire way to secure bitcoins I think Bitcoin is broken.
I'm sorry, but that is a ridiculous statement.
There is a very simple, very proven method to secure your bitcoins.
Create and store your private keys on a machine that never touches a network.
This is known as cold storage.
You can even take the additional step of dividing that cold storage with a M-of-N scheme of your choosing.
I would go so far as to say that cold storage combined with a M-of-N scheme makes Bitcoin
the most secure asset on the planet. Done correctly it is impossible for anyone to touch your coins without your explicit permission.