I thought of a couple more.
For starters, I really don't like it when people speak for other people. Of course if you say something like "He//She needs oxygen to survive." then that's just a fact. It's when people tell me what I want that ticks me off. Every time I tell someone I never want to have kids, they get all up in my case and say, "Oh, you'll change your mind." When will they understand that they don't speak for me?! It's my head, and only I know what goes on in it. Sheesh.
Also, I detest pseudo science and anyone who claims to know facts without abiding by common sense or doing research through valid sources. For example, everyone says that carbs are the devil or that sucralose causes cancer. For Pete's sake, people, beef can cause cancer if eaten in excess. Honestly, I don't like the information age. Any idiot can put false info gained through speculation out there and people in their paranoia will gobble it up.
Speaking of paranoia, how annoying are overprotective parents? I saw a kid on a leash this morning!

Plus, parents make their kids look albino with so much sunscreen of SPF 6000000 or whatever it is, give their kids floating devices instead of teaching them to swim, and keep them from playing in the dirt. Dirt can be good for kids. It helps them build tolerance to bacteria and become immune to certain illnesses and playing in the dirt can give kids access to good bacteria that amplify serotonin production, which allows them to lift their moods and be happy. This upcoming generation is doomed...