I don't like the way that state education is universally condemned as failing all children when in fact it isn't. A lot of children who come out of school without achieving much do so because they could not be bothered to listen, learn and behave(you can lead a horse to the water but you can't make him drink it).
How teachers hands are tied when it comes to disciplining unruly children and their parents who threaten the teachers also.
Parents who do not properly restrain their children in cars.
Parents who are too lazy to feed their children nutritious food. If you don't know how, learn. There are plenty of books in the public library.
Parents who are incapable and indifferent to disciplining their children and then expect society as a whole to put up their homegrown miscreants.
The notion that it costs £xzillion to raise a child. No it doesn't. If you want to be a consumerist lackey and buy everything marketed, then more fool you.
I hate the fact that if a child does not go on holiday every year, then they are viewed as deprived. No, a child is deprived if s/he is unable to eat every day.
I hate the fact too many parents are too lazy to walk their children to school when they can walk. Then they proceed to block people's driveway, school gates, park on double yellow lines etc. So inconsiderate and selfish.