You have to choose whether you'll save it or invest it.

The moment you decide to invest in bitcoin, you are not saving money anymore as that amount could lose its value in the long run. Yes, I'm talking about the possible negative result as investing does not guarantee profit. However, if you are willing to risk, I'm sure you know how to manage that risk and you'll only invest what you can afford to lose.

Thing is, if you are just saving it in your piggy bank, inflation will hit you, but you still have that money when you need it.