More unsolicited advice, but it works for me:
What I do in any situation is I tell the person exactly what I'm planning on doing and the hell with what they think. (You come off sounding like the superior person Dana accuses people of, but what the heck...at least you're happy)
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If/when I have a child, I will go with cloth diapers because I feel it's better for the environment. I'm not looking down on those that use plastic, I'm merely making a personal decision for me that I feel is right.
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If/when I have a child, I'm going to drink a glass of wine occasionally if I'm in the mood and I'm going to take advantage of any and all pain meds I have at my disposal. Period. So there.
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If/when I have a child, the decision to breast-feed will be made taking into account whether or not the size of my breasts will smother the child. If I choose to breast feel longer than one year, that will be my decision, not yours.
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I don't particularly want to hear your horror stories or statistics, thank you very much. Women have been breast-feeding for eons and I'm not sure there's any way you can actually screw up the process.
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If I want to enroll my child at a pre-school academy, I will.
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If I want to home-school, I'll do that as well.
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This is my life, not yours. This is my child, not yours. The only advice I'm really interested in is that of my mother/grandmother/best friend who've been supportive and loving of me in the past and have my best interests at heart.
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Granted, these answers aren't the most politically correct, or even the most polite answers you can give. However, it's pretty much guaranteed that acquaintances and co-workers will think twice before trying to lay their miserable accounts off on you while you're pregnant. You just have to have the self-confidence to stand up and tell people you're not going to take their "friendly advice" any more.
Best of luck!