Is there are serious lack of common sense among some muslims?.....?

I agree wholeheartedly and just answered similar to this in another question about all the muslims who come here asking questions about whether something is haram or not when the obvious answer only requires some common sense. It makes me wonder if these people don't have parents who have taught them anything, if they are just asking in order to be asking or if they are really so worried about haram that they cannot live their lives without fear of sinning.