I don't think it's about hating kids, I certainly don't hate them (even badly behaved ones) but I've noticed a learned helplessness amongst parents these days that, in their heads, absolves them from any responsibility they may have to direct their child up behave appropriately.
I work in a school and the number of parents that will honestly just tell me their child will refuse a particular sanction the following day is astounding. I like to give them the heads up so they can have a conversation with them, or bring them in so we can discuss it together but the over riding attitude is 'good luck with that, they'll refuse'...
How many times do we hear that schools need to include more life skills within the curriculum because young adults are lacking them? Or that because of COVID lockdowns our young people lack social skills?
Parents are scared to take responsibility because that means confronting their children and it's too in vogue to be on their children's side, arguing that they have rights or that school are wrong (or my very favourite, picking on them). A lot of parents are scared to parent, and that just produces children who feel entitled to behave however they want, they're being taught that at home so no wonder they're acting out when other adults try to intervene. My favourite analogy to them, and their parents, is that I'd rather be having the battle with them about uniform/behaviour/detentions/consequences in a safe environment than see them being put in the back of a police car in town on a Saturday afternoon/evening when they try to pull that anti social behaviour.
The truth is that we'd just all like to co exist, be polite and respectful and get along. If boundaries aren't imposed from a very young age when children begin to socialise independently you may as well piss in the wind. Then come back to a parenting forum when they're 14/15 and you're struggling to get them to be polite and respectful, let along understand actions and their consequences.