This is interesting. My DH was a lefty and was forced to switch by mean old lady teachers in inner city Philadelphia. His mom is a lefty. One of my kids is a lefty, but as a musician, he plays guitar righty and uses a mouse with his right hand. He played baseball as a lefty, though. As a kid, he had horrible problems with fine motor coordination, as do I. He still can barely zipper and button, as an adult (like me). However, he is a good athlete, cyclist, runner, kayaker. My other son is a righty, but as a young teen was into archery and we found out he was left eyed, thus shot the bow as a lefty. He is extremely coordinated and mechanical, thankfully, not inheriting my issues.