Most Countries issue their own currency. If a country is able to issue its own currency why should it bother taxing the people to pay for services?? A country that issues its own currency could issue enough currency to pay for the necessary social services of that country. No Tax burden is needed to pay for the necessary public services.
In principle you're right. They could just engage in inflation. Print money to pay for state services, the money finds its way into the economy, inflation ensues. As long as it's kept under control, it could work. People just get really upset when they find that their money-in-the-bank has devalued by half. Somehow, part-tax and part-inflation seems to be understood as more acceptable. Watch "money as debt".