Why are millennials so overly obsessed with having a child free wedding?

So my 30 year old cousin and his Karen wife are planning a child free wedding. My husband and I give my cousin the side eye and called him out went on telling him how cruel disrespectful and selfish him and his future Karen of bridezilla future wife are. I grab my phone and called my favorite aunt explain how her son was being unreasonable about not including our two little angels. We had a bad experience at a child free wedding this past summer with a Karen couple. Well my aunt is very considerate and toldy cousin she isn't attending the wedding if my son isn't the ring bear since his selfish bridezilla wants to only include her side of the family. Well my aunt isn't so happy about my cousin choice. I remember back in the 90's children were included in the weddings. Now a days why more millennial couples decided to plan out child free weddings? I mean why?

Why are millennials so overly obsessed with having a child free wedding?
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