Life Insurance should be your sugestion to your grandmother so she will not be stressed at the time of age. It reminds you that bitcoin is the fastest investment because of its fluctuation in price and we do not know the price of crypto price. You should think about the value of your grandmother's life and not the big money that life insurance is really about. What if your grandma's and your time is in the bearish market might regret later that bitcoin is like a business. business is a gambling.