I have always done this.
As a child I felt like the only adult in a family of 5 who the nearest to me in age was 13 years older. My sisters were 13 and 16 when I was born and my parents in their 40's. They still all say how sensible and considered I am.
In work, I am always trying to calm the waters and create harmony between different personalities.
At home, I do the same mostly between DH and my eldest DS who is 17 and whilst a lovely child, totally walks to the beat of his own drum.
I am sick of sucking up all the shit all the time.
However I know that if I lost it then everyone would be horrified.
Maybe I should