Wait, is this an early times fact or something? I'm not from the south but I am from the US and haven't heard of this...(doesn't mean you're wrong, that's just news to me). I have never been looked down upon for being left-handed, that certainly would've sucked! If anything I just got mild fascination for it and that's about it.
Even though I'm a lefty, I do use my right hand on my mouse, and use it a lot when drawing for things like shading and maybe tweaking, but I can't draw or write with it. I have just enough control with my right hand to tweak things. XD
Even though I am a left-handed artist my 'handedness' is kind of weird because some things I do use my right hand for. My right hand is the stronger one so it's better for say, throwing a ball, but my left hand is better for more precise things like writing & drawing. Also, back when I was way young and played Softball, neither side really felt right when I had to bat. What does this make me? Semi-ambidextrous? Just confused? XD
THAT'S NOT A FUN FACT WHY WOULD YOU SAY THAT WHYYY
It's mostly pain in the crease of my arm/elbow area. I do arm and wrist stretches, wear an arm brace, ice the area, ect. which does help, but it just won't go away entirely. .__.
....what the hell kind of school was that?! Sheesh! They should've encouraged you in being able to use both. >