I missed out on Hebrew school as a kid, which left me in the odd, awkward position of being an Ashkenazi Jew who speaks better Arabic than Hebrew (I speak enough Hebrew to get by, and I can understand it now) which meant I was a very odd duck among the very small number of Jews in my home town. I have anecdotal noticed a higher number of left handed Jews and Arabs than other populations, and I've always wondered if that might have inclined us to create a right-to-left language.