Maybe working with miniatures/model airplanes where fine work and steady hands are required, small hands would be an advantage. For an artist who paints on canvas would hand size matter? After all it is the brush that actually touches the canvas, not the hands. For baking I think it takes large strong hands for kneading bread dough and a lot of strength to pull a 25lb roasted turkey out of the oven without dropping it. For a sculptor large strong hands could be an advantage. For a seamstress I don't see how it would matter. For a construction worker the bigger the better because I think we associate bigger with stronger..
Is it true though that small hands equal very small penis?