I call it the MacRumors Forums/Apple Discussions syndrome:
"Why would you WANT to hold your iPhone this way?"
"What kind of moron would want to keep using their 5-year old Mac?"
"Why are you trying to export this file? Just create a copy by hand, duh."
"No, this can't be done. Terminal? No, don't use it. Here be dragons."
Totally agree with this. I can't stand it when people start mucking about in the comments. It's almost as if they are looking for something to do, and then feed off of each other. Eventually, all the activity draws the attention of a super-zealot, who promptly closes the question.
When I've decided to post on SO, it means I've failed miserably at finding a solution on the internet and it's usually a very unusual question. I'm sure there's a nice design pattern I could be using or there's a different, more standard way to do it, but I do not post on SO as a newbie in the field (or at least I avoid such questions).
My solution to avoid that kind of answer is to open my post giving all the reasons why I'm not doing it the usual way (for example, why I'm using plain WINAPI instead of MFC, .NET or whatever newer technology is out there). I still get suggestions I'm doing The Wrong Thing ™[0] though.
[0]: https://stackoverflow.com/questions/9199542/disabling-visual...
EDIT: After posting this, the comment linked in [0] seems to be removed, but it was something along the lines of "Any reason you want your app to look old? :)"
You kinda end up copy pasting your life's story every time you ask a simple question. Drives me nuts and makes me use IRC more often because the feedback loop ends quicker.
It usually translates to "I know the answer to your question, but instead of just answering it and letting us both get on with our lives, I'd like to show off my vast intellect by helping you embark on a major re-design that you neither asked for nor need at the moment."
For example, yesterday a guy asked a rather complicated question about hacking the Objective-C runtime to replace a class in the inheritance tree. But from his question, I was able to infer that what he actually wanted to do was globally change a class's behavior. So I answered the question that I read between the lines. His response was, "Oh, yeah, I don't know why I didn't do that to begin with." In that case I felt sure enough to answer without asking, but in other cases I'm not as confident whether this is actually a different question in disguise.
I've replied to "does anyone know where the nearest ATM is?" with "the pub we're going to has no card transaction fees or minimum spend". It doesn't necessarily solve their problem, but there's enough chance that it does, that I feel it's a useful thing to say.
I can't say that this is generally always the case, but when people ask "what is it exactly you're trying to do?", it's often because they're trying to figure out if you have an XY Problem[0].
E.g. in phrasing my question, specifically having to mention a whole bunch of things that obviously aren't the problem but people are going to insist on anyway unless I've already mentioned them myself.
Or the whole "Well, you shouldn't be doing this in the first place so I'm not going to help you with your actual problem".
It can be incredibly helpful to point this out. But often I'm doing things in a certain way for a reason (constraints that aren't relevant for the question, like "yeah but our entire codebase").
So when I say I'm doing it this way for a reason and looking for a way to make it work, either trust my judgment or decide I don't deserve to be helped and stop commenting. But it often ends up being a massive distracting derail preventing others from trying to answer the question I was actually asking in the first place. Most annoyingly, this behaviour is often rewarded with upvotes.
For example:
> "I can't connect to my database due to error 110, I have no idea what that means"
"Why aren't you using an ORM?"
> "I have good reason not to, besides, I'm just looking to fix error 110 now"
"But a good ORM handles these types of errors for you, it'd be stupid not to use it"
> "You're probably right, but that'd require a lot of rewriting and refactoring and that's simply not an option right now"
"Ok, get back to me when you're actually using an ORM and still having trouble with your database"
when all I'm looking for is "That's a connection timeout, tried checking your firewall configuration?"