Sejje, its because you are use to of using it. I am left handed and using mouse with my right hand from past 10 years, since i started with a PC. its same pro

Sejje, its because you are use to of using it. I am left handed and using mouse with my right hand from past 10 years, since i started with a PC. its same problem with keyboard with 2 hands. I haven't though about it till now but just realized how proficient I am with my right hand in operating mouse.