Well the bitcoin is not a centralized currency which make it almost impossible to control , that way this currency is immune to inflation .So you can convert your money to bitcoins and never fear that it's value will degrade , but the problem is with using it everyday and being commited to certain payments for businessmen , as its value fluctuates a lot so if you convert 10000 dollars in BTC and you need to pay a shipment in a week the value of your money may decrease to 7000 USD , and you wont be able to pay it .