Have you ever wondered this question? I guess not, because if you did, you would have searched about this on the internet.
Don't worry; I'm here to solve your query. Talking about watches, there were times before the smartwatch market emerged, people thought wearing them is old school. They preferred pulling out their cellphone from the pocket and looking at the time rather than looking at a watch for the time.
Though after smart watches had conquered the world, watches came in trend once again and now people are willing to pay around $300 for a smart watch.
Well, just read ahead to know the answer to your question (Why we wear the watch on the left hand?).
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And, we left handed people are forced to get used to these equipments.