This site really has become rather unfriendly to real questions about photography. It is FAR too technical, and does not have enough questions about the artistic aspects of photography. That really does need to change, and it is not impossible to do so.
Photography IS an artform, and really the vast majority of questions about photography...PHOTOGRAPHY, not the equipment we used to take photographs...are going to be less than 100% perfectly ideal for the standard technical SO format. We need to ACCEPT that, and get with the program. Photography is art, and questions about that aspect of photography, arguably the most important aspect, MUST be allowed here. To say they are not is just ridiculous.
Just because you are answering a question about the subjective artistic aspects of photography does not mean you cannot maintain the question/answer format, and avoid extensive discussion. You can most certainly provide such answers. We may not get a clear "winner" of an answer, and that is ok. We may have some opinion show up, an that is ok. That alone does not break the question/answer model that SO provides.
The only thing we really have to keep under control is discussion and debate in the comments under each answer. If a question demands opinion-based answers with a degree of subjectivity, FINE! Let them be, don't debate their mere existence into oblivion. We really do NEED such questions, and we need people to provide their answers, even if they are somewhat subjective, because that is what PHOTOGRAPHY is all about.
Further, regarding questions that are hard to answer. Rather than closing them permanently, we need to work with people to ask better questions. Just because a question STARTS OUT poorly worded does not mean it cannot be turned into a good question. As a community, evolving questions into a form that DOES better fit our format and DOES allow good answers to be provided, even if they involve some opinion (again, it is PHOTOGRAPHY, opinion is fundamental to it!), is something we need to be better at.
Matt is dead-on here. I've kind of lurked for a while now. I did not really realize why until I saw this post. I think now I understand...Photo.SE is not really about photography. It is about hard photographic theory and hardware...and not really anything else. Whenever I look for information about the artistic aspects of photography, which is something I am far more interested in these days, I very rarely find myself directed to Photo.SE. We just don't have the content. That is really sad...