I've always been like this
I was in a car accident when I was 2 and had a spinal cord injury. It affected my arm rather than my legs, but I still have the use of my hand, which is the most amazing thing! I think I'm lucky that this happened to me when it did because I don't know any different and if it had happened when I was older, I would have had to adjust. People don't notice and even when I tell them, I don't get much of a reaction out of them because I function so well. The only time someone has said something to me was a friend watching me do my hair one day, completely one-handed, and she said "Wow. You are amazing." I will never forget it because no one has ever said that to me and of course being female, doing your hair is the most important thing! I also do a lot of things left-handed since I can't lift my left arm and use my right hand like most right-handed people do, I do it the opposite way since my left hand works. Such as scraping out a bowl in the kitchen. I can raise the bowl with my right arm, hold the spatula in my left hand and gravity pulls my left arm down. So I'm very thankful that this happened when I was young and that it happened to my arm and not my legs.