I just want to throw this out there- Regardless of whether pig fat is  
rendered or  how similar it is to humans to some religions and religious  sects 
it 
is forbidden.
 
Every human group has some things that are sacred and some that are  profane. 
It  is not logical. Whatever logic there was for it has been lost  over the 
centuries.
 
Pig fat in soap is as offensive to Muslims and Jews as Beef byproducts  would 
be to a Hindu or whiskey to a Mormon or buttons to Amish or for  that matter, 
California white Zinfandel to the French >:) 
 
I am not condemning or advocating it  or any religion just  throwing it out 
there for thought.
 
Harper