Not really hatreds, but close..
Slow walkers, especially in groups. I just tailgate them till i can overtake

Old people included, but at least they have a reason for going so slow.
Probably worse is when im walking with a group of people, who go so slow or eventually come to a standstill due to conversation....just keep walking and talking like you were doing...
This is definetly a hatred....Can openers, and cans with/without ring pulls. Seriously, Put ringpulls on all cans and get rid of can openers, or get rid of ring pulls so you know to bring a can opener

So many times i take a can of beans etc to work and forget a can opener cause i thought it had a ringpull.