“The Sweetest Place on Earth” is the tagline for Hershey Park in Pennsylvania. In addition to a family-friendly amusement park, it is also the home of Chocolate World where you can create your own candy bar. For $29.95, you can “Dream up your perfect candy bar and watch it come to life, from flowing chocolate to solid bar. Choose your ingredients and design a personalized wrapper!” The price tag is steep, but at least you get to choose what ingredients you want. No surprises!
 
Customization is also one of the benefits of in vitro fertilization (IVF). While most couples do not choose IVF unless they are infertile, the “upside” is that embryos can be selected, indeed customized, for a variety of factors. This designer service is marketed to more couples including those who can conceive naturally. This is just one of the many ethical issues with IVF.