Cutting of new born hair

On cutting of new born hair at one year

I'm a very curious person so I tend to question alot of things especially when they are not making sense to me. Or I don't understand the reason being given, I question it till it's a bit reasonable to me.

Last week I met a friend with his son, very cute baby boy and his hair was plaited. The mum explained that his hair was too long and baby was always crying when they tried to comb it so she decided to plait it. And that she was waiting for baby to get to one year before she can cut the hair. She can't cut it before or after, it has to be at one year kpere🙄🙄🙄😩. Who made these rules by the way?
Me I was more interested in the cute and soft baby hair and just passively mentioned that I won't cut my baby's hair if they had such long and full hair. These people attacked me ọ, saying tradition states that we must cut the first hair a child comes into the world with, it's not good for the child to carry the hair.

When I was in secondary school, my friend's mum gave birth and till recently when I found out, they didn't cut J's hair. Her hair didn't cut or no village witch followed her or ancestral lie lie curse. She entered secondary school, If I  remember correctly what my friend told me, before she cut her hair. Her hair was so long and curly and everytime I went to their house I always loved touching it. As far back as that time I already told myself I wasn't going to cut my baby's hair.

So I want to know why we cut our hair at one year? What's the rationale behind it aside the fact that we were indoctrinated into it by our parents and never bothered to question the reason why. I would like to stick to Samson's bible story where God asked him not to cut his hair, because I don't know any other place in the bible where God asked people to cut their hair even.