It is not wise to invest all your saving on any I investment no matter how lucrative or promising such investment might look at the beginning. There are inherent risk in any investment and you have to determine the risk and be willing to accept how much of the risk you want to take.
yes, we still need that money to continue our life so we can buy something like buy food or anything else. and if we decide to invest all of our savings, then maybe we need to think about this and maybe we can only use 50% from the totals of our investing and I think the amount is big too for making the investment. we need to think about how our daily life if we use all of our savings and I think we don't want to get a problem with using our savings in cryptocurrencies.
In fact most people suffer from losing money instead of making profits because by doing that or spending all your savings in cryptocurrency can make you rekt. That 50% is a good ratio as long as you have to diversify your money from savings, neccesities, daily use, and for investments.