If you go high on Strength, it will increase both damage and AB. Now, if you get GTWF you will also gain 3 extra attacks at your highest BAB. Therefore, if the opponent does not have damage reduction, it is actually possible to outdamage a two-handed character out the virtue of scoring more hits per round. Moreover, if you make use of Northlander Hewing and reach 26 BAB, you basically get all your main hand attacks with that mode active.
Plus... even Drizzt can look kind of cool at times..
