Here we come!!!!
Visa pictures serve a multitude of purposes:
a.) They allow you to visit/live/work in the country to which you are applying.
b.) They are unflattering so they keep you humble.
c.) They show who needs a haircut (or perhaps who needs to grow hair!)
d.) They remind you (or rather serve as one of a myriad of reminders in the course of a day) that you CANNOT force an ‘almost-three-year old’ to do anything including stand still for 1 second. Or at least not without tears!