why does everyone keep telling me...

Sam
Why is it that everytime i mention what we are naming my son people always tell me "watch what you name him" its so irritating then my MIL tells me right agter we found out gender "lets talk about his name cuz i haye it" and then when shes around others saying i gave him her initials when i clearly never said i did!!! like seriously i chose MY CHILDS name not for everyones else benefit or for them  to put in there opinion like its up for debate!!! Ughhh just so irritating!!! 
Our sons name we chose was Mavric Joseph Martinez
 (joseph is my dads middle name)