Reason one: You can do that IN REAL LIFE. AS I STATED. CAUSE *I* CAN DO IT.
Reason two: TWF sucks. So it doesn't make much difference.
Reason three: Mechanically, there's no difference between having high strength, low dex and armour, and having high dex, low strength, and two feats spent. The latter is probably weaker: Feats are FAR better tan gold.