To get away from the ever inflating fiat. But since we cannot spend bitcoin directly everywhere yet, it now serves as a good investment. It will have a high value in the future so having them now while the price is still at low is very profitable for us.
We can get away from fiat inflation with bitcoin but only partially since bitcoin price is still denominated against fiat money, so if governments keep printing fiat then the value of bitcoin in fiat will increase but since the fiat will buy less and less stuff as it inflates then our bitcoin will not buy more products and services.
The value of bitcoin has not relation if the government will print more fiat or not, it is solely base on the supply and demand and the economy of a country could be one factor to let them decide to adopt to give value of their money.