it is a very idiot way to use all the money you have to invest in cryptos, crypto market is very fluctuative all the time, so even a good trader must be affraid of choosing to trade all their money or not, because in cases the price of a crypto can makes trader become million in a night or loosing all if the price to the bottom, so that is why many traders give us advice to split into the money many parts to invest in many cryptos.
Trading is good because we can get a profit in just a day but we don't need to put all our money on it because at the first place we are not sure in the coin we have, we don't know if the coin will increase tomorrow or the price are going down, trading is risky that's why we need to be careful in putting our money.