Every order from Allah has great benefits for us whether we know the details or don't. Why do we pray Fajr prayers in two Rak'ats and Dhuhr in four and Asr in four and Maghrib in three and Isha in four Rak'at? This is the order of Allah which has great benefits known to Him and we may know little bit but our faith is firm that every order from Allah is for our benefits.
prostration (Sojood) has great benefits for us including reminding us about our origin from the earth and our end after this life inside earth, and making us more humble and many other benefits.
Wassalam.