Well, obviously you can't slap a pregnant woman (or maybe any woman unless they really, really annoyed you... ) but YADNBU.
I get so fed up with everyone's 'women are people not incubators' and 'it's none of your business'. If it's no-one's business whether someone chooses to use an unsafe car seat, why is it anyone's business if someone hits their child, or leaves them home alone? It's partly because people think thinsg aren't their business that adults are able to get away with treating children appallingly and abusing them.
I never get why people think it's acceptable to smoke whilst pregnant (as women are people, not incubators) but not for them to get blind drunk, jack up heroin or take part in other reckless and non 'mainstream' behaviour. Personally, I think smokers store up a barrage of excuses to reel out to others ot justify they habit. They can never just be honest and say 'well. it probably won't do any harm, so I can't be arsed to give up completely'.
I expect you do feel like that because you are not a smoker. I hate smoking and am continually trying to give it up.
I expect you are also perfect and never shout or abuse your children, because lets face it, shouting is abuse. I bet you only feed your kids organic cheese on toast because to do anything else would be child abuse. Let's get onto your relationship with your partner. Wow, is it really perfect. I hope your kids don't hear you bickering or telling him that he isn't good enough.......... I could go on and on.
Don't farking judge you silly person as I bet there are aspects of your life that could be pulled apart and leave you absolutely ripped and bleeding!