...crypto-currency wish to remain anonymous? 1) Why did the key person(s) involved in the creation of the bitcoin crypto-currency wish to remain anonymous?

2) Will the full story of the creation of bitcoin ever be definitively revealed in all its detail, and if so, how long will that take?

3) If bitcoin fails (for whatever reason), will at least one of the other similar currencies (litecoin, etc.) supplant bitcoin, and grow into a widespread, practical, viable, durable, long-term digital currency?

4) Can any digital currency (such as bitcoin, litecoin, etc.) grow into widespead, global use and remain fully independent, i.e. remain unregulated by national government(s)?

thanks for your answers