Let's face it, revolvers are cool. In fiction, revolvers are often shown to be better than any other handgun. If a character is The Gunslinger, chances are it's a revolver he'll be slingin'.
In Westerns, cowboys and outlaws are seen with revolvers. This was because revolvers were the only repeating handguns at that time in history, not because of any cool factor. But that didn't stop them from being cool anyway.
And now, thanks to bungie, the revolver looks more awesome than ever before.
Come release day, I'l be taking down all manner extraterrestrial hostiles with my trusty six-shot. Who's with me?