I know I'm guilty of it from time to time.
Do you do this? If so why?
For me, the most common reasons why I do this:
*By the time I've forumulated a good response, someone has beat me to it and has said basically the same thing I would have said only better. I don't want another "me too" post.
*Worried that I haven't phrased what I wanted to say well enough and it might cause others to misinterpret what I've said.
*Decide that what I'm about to post is somehow too embarrasing or offensive.
*Decide that what I was about to say isn't going to add much and people aren't going to be interested anyway.
*I change my mind midstream and by the time I've formulated my response, I've stopped caring.
*I realized that formulating a well thought out response is just going to take too long and I don't want to spend the time.