Even if it doesn't yield profit now it can later, remember how much BTC was valued and worth at a time, and if this 0.01 was used in trading and the user was lucky enough then can get much more, also regardless of how small, it's a good experience to invest and help in future financial maturation.
It will grow soon so those small investments that we will take care today will be profitable and good for profiting in the future. And since the factor of price in bitcoin is big, you will be basing the amount base on dollars so if you invested small amount of bitcoin while the price is low, look at the price in the future, it does matter.