Sometimes nature decides and who is to say what is better?
One of my D’s has 3 children, one has 2 and one has just one having had a miscarriage in her early 40’s when their little boy was 3, she decided perhaps nature, or her body, was telling her something. Yes she would have liked him to have had siblings but now 7, he has cousins he is extremely close to (2 he sees every day), is very confident both with adults and other children and seems to have loads of good friends.
I remember the youngest of our 3 daughters in conversation with one of her friends (also 1 of 3) in the back of the car discussing the advantages and disadvantages of their older siblings being away at university and life as an “only child”, not realising I was listening.
In favour, they felt that mum and dad had more time for you, but against was precisely the same thing- you could not get away with anything because mum and dad knew what you were doing!
Pro’s and cons indeed