there are just some people who get off on attacking the vulnerable. However I've got to put my thumb on the scales at this point and say that in my time as a "vulnerable adult", I've encountered way more nice and helpful people - people who hold doors, people who offer to help carry my tray in a cafe, shop assistants who go the extra mile, passersby who notice I don't look well and ask if I need help or to call anyone - than I've encountered the idiots who yell abuse from van windows or snipe about how [insert word for disabled persons] are a drain on the taxpayer. Likewise I bet for every person going "ooh" at the epileptic girl you were attending, there were several walking by thinking "poor girl, none of my business". The insensitive (and sometimes inhuman) idiots exist, but they're outnumbered.