I get irritated when I have to spend 90 minutes being kicked in the back - yes. I fail to see why that is unreasonable when it's blooming annoying and after a while - gets flipping painful.
I also have sod all time for the poster who kicked off because not everyone stopped and smiled at her baby, that's the baby SHE chose to have - people have their own lives, their own life choices, their own priorities - and they, to them, come above some random bird in the supermarket's baby.
Plus if everyone did stop and smile - they'd be on here complaining that everyone wanted to fuss over the baby without her permission... you only ahve to look at the health and safety thread from the other week to see just how badly people take it when others DO show a concern for their children... damned if you do - damned if you don't.
I get incredibly sick of parents trying to fob THEIR life choice off onto everyone else. Loud noises irritate (be it barking dogs, loud children, loud adults) - that's human. Look how many threads on here get started complaining neighbours mow lawns, play music, have a noisy car - yet those same people then actively relish in some cases getting their kids to make a similar level of noise back at other people... the double-standards annoy me, inconsistency annoys me, hypocrisy annoys me.
I have no issue with kids - I have issues with parents who refuse to accept that other people may not be as tolerant toward their offspring as they are (natural really - I don't think that's an uncontroversial statement) and make no effort whatsoever to try to reduce (note I didn't say minimize or eliminate) that on other people.
Of course on here I'm painted as being evil and unreasonable for that - I don't think it's acceptable to allow a child to kick the back of someone's seat without even a "If you swing your legs like that it kicks that lady in front's seat" comment, or a "can you two please stop shouting at each other because that person over there is trying to read a book".
Not everyone in the universe likes children - there are even some people who like their own children, but shockingly might find the behaviour of others' children irritating at times...