I'm a leftie... a proud left-hand dominant. But I can eat my soup with the spoon on both hands... no problems. Adaptation was needed in a right-handed world.
What about me, bet there is no day for me... I'm both left and right handed (am I both or am I neither... feels like neither sometimes ).
I tend to write left handed at work because it's easiest to have the paper on the opposite side of the keyboard from the mouse and the mouse is shaped for right handed use. However I still pick up the pen and start using it in my right hand at times and outside work it's quite random.