Generally because of what's under the "posting guidelines" section of the original post in this thread.
Your thread isn't quite bbv or obnoxious or anything like that, but it's also not really strategy, thought out theory, etc.
Your thread is more of a general poll, we've had a lot of those and traditionally lock them as they are usually more of curiosity/LC than anything.
Let me know if you need any more clarification/answers, but a good rule of thumb is if it's not strategy related it's more likely to be locked and more likely should go in the regs/LC/beginners threads.
The reasoning for that is that we've had a lot of complaints at times as non strategy threads start to dominate the forums a bit, they also seem to take away a bit from the strategy threads if too many are left around. We try to maintain a balance and leave some of the LC stuff that is really popular (example, actual hu4rollz that happens, people really like that stuff).