Jill, I agree. When someone asks a question on this forum they deserve to be treated respectfully and not belittled.
Sometimes, the answer for one traveler is not the same for another. We each have different values and travel priorities. I am sure that some would be scandalized by some of my travel choices why I might find some of theirs a bit strange.....
There is room to give alternatives or ideas, but I think it is an art. There are some key elements to an effective response.
1. Did I read the entire question from the original poster? What is he/she really asking for?
2. Did I read the previous responses so I know what others have said in response?
3. Is there something new that is useful or encouraging that I could add to what has already been said?
Perhaps you have seen the question about ATMS 10,000 times and inwardly cringe that someone else is asking about them yet again. However, they would not ask the question if they already knew the answer and didn't desire a thoughtful answer. Maybe it is the debate over carry on luggage and checked luggage, rail passes vs. advance purchase, roundtrip flights vs. multi-city. No matter what the topic, there is room for different ideas and thoughtful answers.