Yes, it's a well discussed topic, yet very important especially nowadays as the society actively praises and promotes younger and younger baptisms....(even on JW broadcasting)
Let's sum it up: a child is too young to:
Get a drivers licence
Buy or consume alcohol
Enrol to vote
See a doctor alone or choose own medical treatment
Open a bank account
Choose to leave school
Buy a house
Get a job
Operate machinery
Travel overseas unaccompanied
Get married or have sex
etc etc....
Yet the society will say they are old enough to do "The most important thing in life-baptism"
Go figure....