alot of my friends are only child, my brother also have a few friends that are only child. i always ask them why do they like to have sleepovers at my house so much, their answers made me change my mind of having only 1 kid. quote ' because im lonely at home and you have your own football team to play with at home' . according to most of my friends, they always wished for siblings because at least they dont feel lonely at home, and in some situations like dinners, vacations , their always alone because parents would usually be busy socializing and such. even now, when my other 3 siblings are not around, i really feel very lonely, the house is so quiet , alittle too quiet sometimes. but if you can afford, i would really suggest you to have at least 1 more.