Here are a few random thoughts.

Little johnnie howard
Drivers talking on their mobile phones
TV shows about celebrities
4 wheel drives in the suburbs
Reality shows - especially ones like Big Brother and The Weakest Link
At least 60 lbs
Jobsworths of all descriptions
Spam
Multi lane roundabouts
High petrol prices
Mobile phones in concerts
Line dancing
Mosquitoes
Sandflies
Stinging Ants
Stink Bugs
Cockroaches
The smell of cat pee
Drivers who flash their lights
'Helpless' females
Speed humps
Slow drivers that dither around and straddle lanes and get in your way
Most pro sports
Horse racing
Voice recognition systems
White ants
Precocious bratty children
Weeds
The smell of bad potatoes
Colds
Weak bendy paper plates
The high cost of living
Snobs
The bugs and diseases that damage my vegetables and fruit
Radar traps
Religious fundamentalists of every stripe
Judgmental people
Violent criminals
Cars that break down
Artichokes


Plus a lot of things others have mentioned.

There. That will do for a start. I'm sure I'll think of more.