For a second there, Lady, I thought you were going to tell me something profound.

Seen here:

This isn't the big news I'd hoped to find when I followed the link.

Seriously, my big problem is that I can't overcome 50-odd years of muscle memory and learn how to comfortably shoot a rifle left-handed. By comparison, using my left eye with the pistol was just a matter of practicing enough to remember to do it under pressure. Without really realizing I was doing it, I'd gradually developed the very bad habit of closing my left eye so I could find the damned sights.

H/T to Robb Allen.