If you had the opportunity, would you do it?
For example, you buy 1 Bitcoin for 8000$ and sell it for 8800$ but the money goes to your Paypal account?
And you could do it over and over again?
Nope. 10% is so small to b converted in fiat. You also need to consider the fee since it is paypal. Since bitcoin is good for long term investment, it is not a good idea to convert your Bitcoin into fiat because it will not appreciate overtime.