A few people seem very adept at reading my lips when i quietly mouth words. At this point, the numbers have evened out and the majority is neither male nor female. The only difference between these skilled lip readers and others, seems to be the willingness to confront me "face on".
Looking someone directly in the face while conversing, makes it a much more intimate experience. This can make many of us feel uncomfortable. Very few people are inclined to hold your gaze when talking, even if it may be necessary in order to read your lips. To to avoid this discomfort, some try to avoid the experience altogether.
Admittedly, my countenance is not the most pleasant view in the world, but i think a lot of people in general, prefer to maintain a "distance" from each other. When others ask how you are, they don't really want to know. We like to chat, but no one wants to take the time to talk. Many of us have hundreds, if not thousands, of friends on a social network site, but we don't know the people who live next door.
In effect, we have placed the quantity of technological superficiality over the quality of personal engagement.