Hi.
As of today:
Indirectly it can buy almost everything available in online stores.
Some middleman service is required to do so but it is possible.
The future:
To be honest no idea what future await bitcoin, I think nothing extraordinary
will happen. Some price fluctuations rather small in fact.
Like #avikz said
BTC is and will be equivalent of gold. Rare, mysterious
thing that awakens desire, greed and admiration.
Maybe little more spread throughout the peoples minds and wallets