Why do some ppl feel the need to justify their own decisions if your's is different?

Yay Stoked! How are you doing? Do you feel prepared?

DP said today I should invite my very best gf to come and stay with us for the birth. I don't know if she'll be able to because she lives interstate, plus I don't know how much time she'll have, but she suggested it when she stayed at Easter. I'd love to have her support, she's given birth to twins and her 4.5 kg boy and is really supportive and excited about our HB. She'd be DD's support person.