Not the OP, but the debate was created from that school of thought.summerof2010 said:You act like the OP was just sitting around thinking "Man, you know what Katamari Damacy needs? An option to roll a ball of spikes into a pre-school."
The problem stems from not having the emotional responses available to the player to deal with things.
You could equally ask "Why can't we steal from shops?", "Why are there no gay people?", "Why isn't there magic powered combustion engines?"
Those things don't exist in the game because it would either overly complicate the matter, offend someone or boost the certification to a higher rank - thus reducing the market.
The difference between killing an adult and a child (or better yet a gnome/dwarf and a child) would only make a marked difference to someone where THEY have a difference between killing an adult and a child.
If that's a negative difference(UGH!), then it will repel people.
If that's a positive difference(YAY!), then that person has issues.
However, Binding of Isaac - most of the bosses are children, siblings even. Bioshock/The Sims/House of the Dead...