There are numerous instances of “whole households” being baptised.
Those households would include infants for the simple reasons that
1. there were lots of kids in those days (people had many as many died)
2. the parents would want their children saved especially considered that many would not make it to their 5th birthday
You're making many false assumptions. Especially ones that conflict and contradict the clear message of baptism throughout the New Testament.
Your repeated opinions....
1. there were lots of kids in those days (people had many as many died)
2. the parents would want their children saved especially considered that many would not make it to their 5th birthday
are again assumptions completely outside the Word of God.
Conjecture on your part.