Dual wielding is stupid and looks stupid too. I cannot believe how popular it is in video games and movies. Even for a super soldier who can flip tanks but still has trouble controlling the recoil on an SMG.
It's not in this game because running around with a pistol and plasma pistol without having to switch between them just isn't balanced. If you want to use the noob combo now you have to use a perk on dexterity so you can switch weapons faster. This is a good thing. It makes that combo more of a niche thing and less effective than just shooting somebody with a DMR in most cases.
Is there something about the way I type that makes it sound angry? Maybe it's just something about the way you read.