Mothers Day is not primarily about being a mother and receiving honor, but thanking God for the mother he gave you, and giving honor. The people giving honor should include all moms. Persons receiving honor as moms should also being giving honor for their God-given moms.
Mothers are common: Everyone without exception has one. Jesus had one.
The set of all people with no mothers is zero. The set of all people with mothers is everyone. The two sets do not intersect.
Though moms are common, the mother of any given individual is a rare mother, uniquely designed and assigned by God to be a person’s tailor-made mom in order to accomplish God’s good purposes.
Honoring your mother is a way to honor the One who gives the command to honor your mother. Thank you, all-wise and almighty God, for giving me exactly the mother you gave me.