If you want to make a living out of it then you will have to be sure that you make enough money with it.
Yeah and you can make a living with trading only if you have huge capital to invest, as with higher capital you will also earn higher profits which can be enough for a living.
yes, you are right, to have a lot of capital it is quite easy to make a profit on the trade. moreover altcoin trading easier and a lot of choices, making it feasible to make a living from trading. because bitcoin trading tends to be more stable and trade bitcoin little difficult to be an earning living.