I am most annoyed with issues pertaining to selfishness, ignorance and/or cruelity...
Folks that let their kids cry/scream for long periods out in public
Folks that let their dogs bark for HOURS!
Folks that can't be bothered using their turn signals when they drive
Folks that love to stir the pot
The near 100% of ads/commercials nowadays that are either for foods or drugs that intentionally keep folks sick for profit/$ (Big Food/Big Pharma)