I'm exaggerating I know and I have had some amazing advice from people in here over the years. I'm talking more about the more light hearted threads like food and chat.
Today I saw a thread where a poor MNer was looking for breakfast ideas for her absurd DH and listed all the things he won't eat. Someone has replied basically relisting the things she has said he doesn't eat with a few extras.
It feels like so often MN is a place for people just to be smug. I'm always seeing things like a poster will say 'bleurgh miserable weather any ideas for rainy day activities' and someone will always reply 'err why wouldn't you just wrap and go out, I take my DC out rain or shine, just because it's raining doesn't mean you should just sit around in front of the television all day 
. This modern aversion to the outdoors really gets my goat. Children should learn to enjoy all weather not just sit in front of a playstation, Jesus wept' and so on. OP may well have spent the whole morning splashing about in puddles with her DC and now they are drying out and want to spend some time inside.
I could rant forever with examples tbh.