The government can exist without taxation.
Government provide services (security, healthcare, city planning, etc.)
The problem is that Government is a monopolist.
I have no problem to pay for the services, given I really need them and I have right to choose from which vendor to buy these services.
Right now peoples only choice is to emigrate to another country.
The other ugly face of tax system is that many, otherwise productive hours and resources, wasted for such a non-productive activity as accounting.