It would be nice to have a button to express "Sorry you're suffering; hugs, sympathy." Favoriting a sad status seems a little sadistic. An emoji looks oblivious, and written messages might appear like you're The Vampire Angel of Sympathy, stalking the miserable. It seems so cold just to let a "feeling lousy today" status stand alone.

@Berthavlix I kind of liked how Slack handles this: you can use any emoji as a reaction, and then other users can second your reaction.

Posts don't always fall into the cut-and-dried "angry/sad/funny/etc" categories that Facebook used.