Will 50% of your money be enough to meet your daily needs? Or is 50% of your total income a prudent money? Are you sure that this calculation will be applicable to everyone?
50% of your money is different than 50% of another person's money as whether your social economical status is the poor, the average or the rich will decide that 50% of money is enough for daily needs or monthly bills or not.
It's not good to use any percentage like 50%, 25% or 75% of a personal finance for investment. It depends on each person's financial conditions as said, so the advice is investing with your spare money while you already reserve enough money for daily, monthly spendings and bills as well as have an emergency fund to use in accidental and unwanted time.
If you can manage your finance in general and your investment capital particularly like this, you are well to move onward with Bitcoin investment and Dollar Cost Averaging strategy for your bitcoin accumulation and holding.