Originally Posted by
CCrew
Because a road bike isn't designed for mileage nor extended durability. It's not designed to be "simplistic" and fixable on the road in the middle of nowhere. It's not designed to carry loads should I want to thow my panniers or my BOB trailer on it.
In my opinion, a road bike fits all your criteria except the ability to haul loads. Road bikes are not fragile, and they are as easy to fix as anything else. It's rare that anything more than a flat tire will go wrong. And you're never more than 25 miles from home on your commute, so everything else is fixable with a cell phone.
Having said that, there is no touring bike that will be as fast as a road bike. But if you can afford to sacrifice a few MPH (about 2 in my experience), the 520 will be fine for your needs.
A bit of unsolicited advice: just ignore the answers you don't like--no reason in the world to waste words rebutting them. That will just get you more.