[croo]

I also prefer emails... but this is not a personality thing. The email simply does not have enough dimension to replace normal talking.

You cannot express yourself because there is no body language and cannot talk things through because of the feedback loop. You cannot reflect to jokes or ask about the wellbeing on seeing someone coughing. You can ignore a pressed question by simply not answering - this is very hard to do in person. You cannot see from the eyes of the other person if he's really listening or just seems to be really tired.

It's great to have an email describing what I have to do and it is great for talking to someone you are familiar with. But it is a bad idea to use it for client communication or for doing business in general.