 Opponents of voluntary euthanasia have endeavored in a variety of ways to counter the very straightforward moral case that has been laid out above for its legalization (see, for example, Keown 2002; Foley, et al. 2002; Biggar 2004; Gorsuch 2006). Some of the counter-arguments are concerned only with whether the moral case warrants making the practice of voluntary euthanasia legal, whereas others are concerned with trying to undermine the moral case itself. In what follows, consideration will be given to the five most important counter-arguments. (For more comprehensive discussions of the morality and legality of medically assisted death see Keown 2002; Biggar 2004; Gorsuch 2006; Young 2007; Sumner 2011.)