I don't really encourage debate here. I want to make you consider a different point of view, but do not want to have a serious argument.
So I never tend to end posts with a question along the lines of "what do you think?"
But the main reason that I don't end my notes with a question is only the same reason that the following of a link is always optional and not the reason for the post. That is, however short, every post should be an independent cohesive article in itself, it should not need either an internal diversion or an external answer to make it complete.
So each post should be self-sufficient without a comment. However, not only would I like more people to read this, but I also genuinely want to get your comments. Hmmm.