this is fucking stupid. they show the special relationship you have with the people who made the choice that you should exist, and spent years of their life and great amounts of money and effort to bring you to adulthood. Your mom is your mom to you, you cannot have the same relationship with her that would with any other person in your life. Your parents shape you into the person you are, whether for better or for worse. Although it would be good to have less gendered options to refer to parents as while maintaining the affection, it is in fact good to call your parents by names which the reflect the unique relationship you have to them. Except for siblings, no one on earth has a comparable relationship to your parents.