What's the usage of Bitcoin outside the mainstream of the application such as in black market, gambling and pornographic dealing? I think all the applications above can make sure that the hard currency Bitcoin will not die, however, the true value of it should be shown after it stepping into the mainstream of the application.
The true value of Bitcoin is getting rid of the completely corrupt, fundamentally broken, unfair, immoral, inefficient, restrictive, and non-durable money and banking system that we have today. Bitcoin makes banks obsolete.
With Bitcoin, we no longer depend on authorities or institutions to create, control, store and transfer our money. Considering the huge financial crisis we've seen (with way more still to come), I'd say that's quite a significant value.
This, you cannot stop me from sending money to anyone, no matter their location. This is freedom of speach.