Normally, such thoughts don’t cross one’s mind. We are used to wearing wrist watches on the left hand, and that is that.
If you notice carefully, there are exceptions to this rule as well. Although a majority of people wear watches on the left wrist, some of them wear it on the right . We also hear that men are supposed to wear watches in the right arm and women in their left arm.
It should not come as a surprise that these statements are backed by science and also have a historical background.
Let’s begin with history first
Historically, there were only pocket watches; they had become most popular during the Boer war. Officials carried them in custom fitted leather pouches, which were strapped to their wrists. Although useful for coordinating military activities, they were awkwardly large. And this was not the only design defect. The watches were fragile with huge balance wheels, susceptible to breaking easily.
What science has to say
So, here we must consider that not everyone wears a watch in the left wrist. Most people wear it in the left, with a small fraction of people wearing it on the right wrist.
The logic here is that a majority of the people in this world are right handed. When the trend of wearing watches on the wrists picked up pace, people found it convenient to wear it on their left hand.
This is only argument in the entire discussion, which has no scientific backing. Maybe, it is a cultural thing in certain communities, or it could simply be a stereotype.
People wear watches to suit their convenience. Commonly they wear it in the non-dominant hand.