I golf right handed, bat either (but prefer left), pitch either (but prefer left becauxe I only had the one glove lol), scissors gotta do right handed or the pressure is wrong for cutting it seems like. When I eat I use both hands, not the cave man stab, cut, and switch hands for fork.
Not sure how it happens, but youre right, I do feel like I have decent mastery over both of my hands. My brother is a lefty also, but he's an obligate lefty so I'm not sure it's biological. I bet someone has written a paper on it.