Listening to friends with children (babies really) younger than my own, and their experiences with women it makes me glad I've been there, done that, and bought the 'I hate competitive mother's' t-shirt.
Of course it doesn't stop as they get older. Indeed I wrote only a while back on this here blog about people continuously asking about potty training and obsessing over when so and so's did that, this, or the very insignificant other.
But when they're babies, and when you've only had 3 hours sleep night after night after very draining night, it's even more soul-destroying to hear the sisterhood of mother's turning all wolf-like in a flash.
You've met the type I'm sure, they're all "oh she's stopped breast-feeding already y'know" or "they've started him on solids a little early" and "they're using a dummy, I didn't think they were that type". Type? Honestly people, get a grip! I remember having a basket of shame, walking (crying) my way around Boots getting dummies, bottles and milk for Charles at just 6 weeks - non of which I'd ever had to buy with Rosie. See babies are humans, they're complicated. They aren't pre-programmed dolls that do as your politics/class/ethics desire. Sometimes you just gotta do what you gotta do, but it would help if other's were intelligent enough to let you get on with it.
These soul-draining 'friends' will get their time no doubt. Whilst their babies may like nothing more than organic butternut squash with a spot of breast milk, as teens they'll probably be sleeping with more people and smoking more weed than ours. But I won't judge, far be it from me...