Your statement here is completely out of place as it will be very misleading, confusing and contradictory especially to the newbies who are desirous to invest in bitcoin. Perherps you don’t know what a discretionary income is, A discretionary income is the amount of cash you’re left with after you might have sorted out your other primary financial obligations. In a lame man sense, it’s referred to as the money remaining with you after paying your bills and meeting up with your other major expenses as a man. Now, knowing what a discretionary income is, you can see that the discretionary income is very important In bitcoin investment. All what you need to begin your bitcoin investment is to be able to figure out your discretionary income to use and accumulate bitcoin and hold for the long term goal. It’s never advisable to use the money meant for your other primary financial obligations and payments of your bills to invest in bitcoin if not you will always tend towards selling off your bitcoin holdings to be able to raise some money to meet up with your expenses and if such happens then you’re not longer investing, you’re trading and there’s a high possibility that you might end up trading at a losss because of the volatility of bitcoin. So for you to be at the safer side and for your investment to stand for the long term goal without selling too early, it’s always advisable that you should invest with your discretionary income.