I like plain text as well but I dislike the fact that it looks so ugly. Why do we need to insert line break at 72 (or something) characters? Can't we wrap text emails?
Perhaps I need to think about what I don't like about html-formatted emails. I can't really put my finger on anything. I am not against html when I think about it. It just feels like it is not the right tool for the job. (I know I am doing a pretty poor job at explaining myself. Sorry!)
[edit] found it! http://tools.ietf.org/html/rfc1523