Hi - new here but couldn't resist this thread...

I do almost everything left-handed. Write, throw, play tennis, use tools (but not knife and fork). However, when I learnt Violin at school, I learnt right handed, and when I started to play guitar, again it was right handed. This has advantages and disadvantages.. Personally I found chords easy to learn, but intricate fingerpicking, and fast plectrum runs I still find difficult. I could not even begin to conceive of holding the guitar the other way round. I also played cricket right handed (batting... I bowled left handed). I also think it has a lot to do with which eye is dominant. I have a good friend who is right handed but plays cricket left handed.

David