Is it natural for some fathers to be softer with daughters, why is that?

My father had me at age 42 and my mom is his current and 2nd wife.

He previously had 3 sons (my half brothers) with his ex wife. From what I've learned from them and others, he was very strict and old-school with them.

With me; he rarely ever raised his voice. Sometimes he would even spoil me and it would upset my mother. Others in the family were impressed at the different treatment. So my father was like the gentle giant (the soft parent) in the house. Definitely not the way my half brothers remembers him as.

Why do you think some fathers like mine are gentle with daughters? Is that natural?

Is it natural for some fathers to be softer with daughters, why is that?
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