Good post.
I've helped eight people, so far, transition from spinning to BCs, plus my brother. All are right handed including my brother, but he's unusual. He writes righty, pitched righty, casts righty, but kicks a ball with his left foot. He's always casted a spinning reel with his right, but then switches hands and reels righty. Such a weirdo.
The other eight guys who I've helped make the leap to BCs all had their choice of retrieve. All chose to cast right and reel left. One kid, Justin, had to wait until his birthday to get a reel, but the fam got him a RH. I told him to give it a chance. He did, but couldn't stand it after three trips. No problem because DSG takes back anything. He's happy now with his LH BC. All the guys I fish with except two are righties using LH reels and don't switch hands. My strange brother is one of the two, and the other guy learned on his father's hand me down RH reels. He's 25 years down that road, so he's conditioned to it.
I'm not going to claim that this small sample size represents the entire population. However, if anyone else asks for my help I won't be surprised if this lopsided trend continues, especially if they came from winding spinning reels left handed. That said I'm not deaf to the reasoning of people who make the opposite choice for themselves. In reality the downsides, if they exist at all, are negligible. Also, many righties are total spazzes with their left hand, so I understand why they'd have trouble with a LH reel. One exiled BR member would often describe this syndrome far more elegantly as lacking fine motor skills in the non-dominant hand.
Disclaimer:
Once again, I don't care if someone picks their left earhole with their right hand, or scratches their right butt cheek with their left hand. Have at it. Be happy.