It may be the size, or perhaps in part it's the shape. Some people especially have trouble with the rounded ends of the Leica body. Other M-mount cameras - C/V Bessas, Zeiss Ikon, Hexar RF, CL/CLE, even the M5 - have different shapes and, in particular, generally more squared-off ends. One of those might provide a more secure grip for you.
Originally Posted by jerrybro
Or maybe not. If the system doesn't work for you, you should certainly feel free to move on. Nobody ever need apologize for selecting the tools that are right for them.