Its an american and jewish tradition. Around europe its not done as much.

The bible does say u are suppose to circumsize... I dnt kno what bible he reads but obviously nt the real one. Also on a side note boys do need to be circumsized bc of infections. My sister in law decided nt to circumsize at birth with her kid. He ended up having so many problems with infections that the doctor recomended circumsition at 6! So if u wnt to chance it go ahead but kno as they grow older there may be problems and it may have to be done anyway.