Hi do you have brothers or sisters
Oh my yes.  I had two younger brothers and two younger sisters!  I was not an only child.
I'm an only child so how does it feel 
Well I was a baby boomer, so only children fell off sharply then.  I was great having siblings, but resources like parental attention were scarce.
did you guys get along
Sibling rivalry (animals)
Animals, including siblings, compete for resources such as food, territory, and potential mating partners. In animal sibling rivalry, individuals compete for parental care or limited resources, which can sometimes result in siblicide. Sibling rivalry occurs in many different forms. Siblings may compete for resources in a prenatal and/or post-birth environment. The degree of rivalry varies, ranging from a low level of violence in non-aggressive to the killing of kin in siblicide.
Function of behavior.
When
living outside the home. Stay-at-home dads care for 189,000 children."
Children.
Children Only child families.
An only child (single child) is one without any biological or adopted brothers or sisters. Only children often perform better in school and in their careers than children with siblings.
Children Childfree and childlessness.
Childfree couples choose to not have children. These include: young couples, who plan to have children later, as well as those who do not plan to have any children.