A last will is a legal document that determines the distribution of a person's estate, which includes assets, upon his/her demise. A last will and testament must be up-to-date to be legally compliant with your state's laws. You are free to leave your estate to anybody you want according to most state laws. You are free to leave your money, and property to charity even if you wanted. Doing so though may cause your legal heirs to try and contest your will.