Life: Fake people who use a friendship to their advantage, or people who stop caring about a friendship and you're the one who always writes or arranges a meetup. By that I don't mean people that don't want to meet with you, but people who enjoy greatly when you meet up together but never think of being the first one to write.
PH: People uploading raw demo files instead of taking 30 minutes to record the footage and upload it to youtube.