I do not know if this has been mentioned before and I apologise if i am beating a dead horse but shouldnt the spear be a one handed weapon? I have made it so in my campaign but am curious as to why the designers would make a weapon rule that is so counter to reality.
Greek hoplight spears were around 8 or 9 feet long making them equate to the PF longspear. Most ancient cultures produced troops that used spear and shield, from the persians of the bronze age right up to the norse raiders of the dark ages.
Perhaps allow the spear and longspear to be used as a martial one hand weapon?