Let's get the most important point out of the way first, and it is this:
You can still benefit from the information on the closed post
That's right; the question, and all eight answers that were posted to it, are still there, information waiting to be consumed by anyone who wants to read it.
Now that that's out of the way...
Stack Exchange is not a discussion forum
While we sometimes entertain questions that provoke discussion for awhile, the primary purpose of the Stack Exchange format is not to promote discussion; it is to get high-quality answers to your questions, and to provide a high-quality repository for others having similar questions.
To make this possible, we have to sacrifice certain things that other forum environments have. Take a close look at those forum environments. On reflection, have you ever found any of them really useful to you at all? Can you count on the fingers of one hand the times when posting to a forum really gave you a timely, meaningful answer to your problem?
Recently, I googled "Ford Taurus 2005 won't start when hot." Do you know how many matches there are? About four hundred thousand. Do you know how many of those matches actually impart useful information? Exactly zero. Well, zero in the first two dozen matches anyway.
Why is this? Because those matches go to forums, where dozens of people have posted the same question over and over again, and hundreds of people have posted countless useless answers to that question, including
- "I have the same problem, any idea?"
- "Mine starts but I have this other
- "Mine always starts, I don't know
what your problem is."
- "Mine only starts at Disneyland."
- "I like turtles."
And so on.
Stack Exchange is a known solution to a known problem. The question and answer format is carefully crafted to encourage the posting of high-quality material.
The forum environment is exactly the opposite. It is a vast wasteland of suck, promising everything, delivering nothing. It is the Sahara desert, where you walk towards an oasis because you are dying of thirst, but it is just a mirage, and there's no water there.