I may be just stating the obvious or maybe nobody agrees with me but I think SA is mostly about fear of your feelings. Just read some of the posts and notice how often the word "feel" appears. Plus statements like "I don't want to get hurt". Not talking about physical hurt but mental/emotional hurt. Fear of being or ending up alone is just fear of feeling lonely. Fear of feeling embarrassed or fear of feeling awkward, fear of being laughed at because it feels bad, fear of feeling bad about yourself or something happening to make you feel even worse about yourself etc. I think SA people *may* in general be more sensitive and feel things more strongly. Overly *sensitive* to criticism for instance.