There's a two way street here, however.
Looking at your questions on Stack Overflow, while not terrible, they're not really great either.
The site help section does give really good information as to how you ask a good question. And if you'd read it before posting (as everyone is supposed to really) then you'd have not missed out some of the issues with your questions.
Or if you had read it then maybe you missed the point.
Things like not providing relevant/problematic code in your question and so people having to ask for it in comments etc.
I'm not saying that automatically warrants a downvote, but people are entitled to downvote for these reasons as this is a professional site. You get professional advice but you have to follow the guidelines really.
Also, I don't really see any of the comments on your questions as problematic. If you see sarcasm, then you need to ignore it and think only about the information and advice provided.
There will always be people like that, especially online.
Also, on the two way street, you have not accepted any of the answers from people who spent time helping you.
Are those users to come here and open a question saying "Beginners don't treat the established users very well and don't give votes etc"?
Live and let live. If someone has been rude, report the comment or answer. Otherwise, expect a bit of wisecrack now and then. While it's not condoned really, who cares. Most people are friendly and will help you out.
One last thing to note about Stack Overflow (and MSO, most Stack sites really) is people are to the point, and it can be easy to mistake a "straight to the point factual only answer to a question" to someone "being sarcastic or cold or unfriendly.
The latter happens, the former is true 99% of the time.
Same with comments asking you for things or pointing out things they believe you should already know for your given scenario (ie have some knowledge of the problem).
They're not being rude, just straight to the point and direct, which most people find more helpful, than, as a comparison, a forum where "hi, how you doing, welcome to..." while is friendly, isn't a quick and accurate response to getting an issue resolved!
Stack is about getting clear cut answers, without many pleasantries, so while people are mostly friendly, some drop the pleasantries for just giving facts.
Like this answer really ... ;)