A lot depends on the manner in which you ask a question, and also who's answering. You must realize we have as many useless members as knowledgeable ones, and you have to sometimes determine for yourself which is which. You also have to consider that you may not always get the answer you're looking for, but that doesn't mean it isn't accurate.
If you have issues with somebody's behavior you can always report it to us and it will be handled if it's deemed necessary. As Tiny Voices has indicated, 90% of the time the answers you get will at the least be intended to be helpful, and more often than not be accurate as well. As in the real world, there's no accounting for jerks who might come along and try to stir the pot or create distress, but you have walk the higher road and simply offer them the response they deserve, which is to ignore them and only pay attention to the things that are relevant.