Not taking them is ridiculous though... You get a -4 to ALL AB, which makes no sense when you can reduce it to -2, and then -1 with weapon focus.
Just a quick question because this topic was brought up. I was planning to play my character with him wielding two bastard swords to go for a max damage approach. Is this wise? With all the feats that still means a -4/-4 reduction. Should I scrap this idea and just go for a two-bladed sword?
You get all of your strength mod in damage on the first weapon, then half of your strength mod rounded down on the second weapon, works the same for double weapons. When you weild a doublehander, you get double your strength mod in dmg.