I don't know about younger southpaws, but when I was a kid, a lot of folks considered being left handed was a sign of the devil.
I'm not kidding. One of my cousins had his left hand tied to his waist for a month in a vain attempt to "convert" him. As it was, I just had to adapt to a right handed world. I remember the "lefty" scissors in grade school. NOBODY wanted those! Other kids would tease the crap out of you if you used those things.
I was taught to get along and learn to use things as they were.
Dad taught me to shoot right handed, and to this day I can swap hands pretty effectively.
Turns out that Dad did me a great favor. When I enlisted, if you shot lefty, you had to slap a piece of tape on your cheek so the brass from your M16 didn't burn you on the face.