How is me having an issue with SO overall, any different then someone not have any issues with SO overall? One requires hard evidence and one does not?
I've never had a question closed, but I have had to deal with condescending responses. If I've gotten too much shit on a question, I usually delete it after I've gotten the information I need, rendering the evidence unavailable (even to myself as the poster after a window of time).
Stack Overflow curates its public-facing content, and so do I, when using real-name accounts. Given a choice between being seen taking shit from someone, investing time in arguing with that person, or just erasing the exchange altogether, the third option is sometimes the most expedient. I don't do it often.
Ideally people would just be polite, and questions could just be answered by anyone who cared to answer them, with low-scoring exchanges de-emphasized instead of being shut down.