I am not a left hand writer

There are some people who can use left hand to write letters and work, but right hand users are more common. I am right hand user and I can't use my left hand to write. I heard that most of left hand writer are more clever than right hand writer. I wanted to use my left hand, and I tried to use left hand for writing letters, but my spell was terrible than right hand. So I gave up to write letters in left hand. I think that if we can use both hands, we can live more comfortable, but all left hand writers are not clever than right hand writers.