What a load of BS in the TT....

1a:
What's wrong with paying taxes and why will it kill bitcoin?
A country must get taxes to build roads and run the country. Taxes system might need an overhaul but it won't kill bitcoin.

1b:
This will change once the government understands bitcoin and has new methods of getting taxes to keep countries running.
Not all countries limit the use of bitcoin so this is nonsense. I can still buy pizza here in europe with bitcoin.
Also bitcoin is volatile, maybe they are protecting their merchants and economy. If a company or bank loses 50% of their money due to the bitcoin taking a dive it can easily kill a company. Who says they're doing it to keep their money "monopoly".

2:
Is 1b in different words.

3:
Bitcoin can only be hacked if public key cryptography is hackable. This can be done once quantum entangled quantum computers become mainstream.
If this happens every bank on the planet can be hacked with ease.
Since the greeks hundreds of years ago people have tries to solve the factorization of big numbers. No one has succeeded since so it's safe if you use it correctly.
The fun thing is that a bitcoin account, when no money has been spent from it, is even more secure. You will have to be able to find SHA-256 collisions too to find the public key.
On the other side bitcoin hasn't been hacked but nearly all banks in the world have.
And we can easily modify virtual currencies to withstand quantum computers. Look at Quark-coin.