Case study: Ukraine currency just fell 10% vs the dollar in 3 months and it is expected to fall even further.
So almost overnight because of your government you lose 10% of your life savings. That is robbery and another reason why we need Bitcoin and it will succeed.
In 1994 Brazil changed currency for the umpteenth time to the current BRL (Real). At first the exchange was fixed 1 BRL = 1 USD. People were not aware then, but to maintain this rate the government had to borrow wildy from the IMF and banks, sometimes at 40%/year interest. (Today ~60% of the tax revenue goes to pay interest on that debt, and yet the debt keeps growing.) The apparent stability was highly praised and the president got re-elected because of it.
Shortly after the election, the BRL suddenly devalued to 0.50 USD. People who had savings in BRL were badly hurt of course. Larger investors, with their money in stocks or real estate, were not, of course. I had debts in BRL at the time, so I was actually happy.
In 1990, when I was still out of the country, the government had tried to control inflation by freezing all bank accounts above some ridiculous amount, a few thousand dollars. I know people who had just sold their home and were about to pay for a new one. Inflation dropped alright (to ~10%/year), but the economy of course collapsed. The frozen money was released only after a year or two, with ~6% adjustment, when the inflation was again climbing towards the usual levels of 40%/year.
I am sorry, what was your question, again?