This post reads like a really shit brag. I'm certain your daughter would also be doing great in life if you hadn't harmed her.

You seem proud of causing her physical pain due to her unexpected expression of big emotions. You probably did great raising her on the whole if she is doing great in life, so why you would think that hitting her is the thing you want to highlight to randoms on the internet is weird.

Kids throw tantrums. It's hard on parents when that happens, but those of us with kids (and probably many others too) have total sympathy for the parent in that situation. Some passersby will get annoyed, sure, but they can just turn the corner and not deal with it, so they will get over it.

Getting down to your kids' level and talking through their behaviour and feelings is hard work, but it's better than physically hurting a defenceless child.

Next time you fuck up, perhaps you should be slapped about? Or how about if your behaviour annoys me, perhaps I should slap you. Maybe I should wait until no one else can see though, I wouldn't want to be judged or get into trouble, just like you took her home to hit her!

Internet forums hate kids on the whole, so I don't expect many to agree with my views. But as a parent of some great kids, none who have ever been physically hurt by their parents, I can tell you there is always an alternative to being violent with them.