Making departure statements can be done for many different reasons. Unfortunately, on Getbig they often come across as something negative and bitter sounding. I'm a big believer in the phrase "never say never" because it is impossible in most cases to know what lies ahead. It seems pathetic when someone frequently claims they are leaving and don't follow through, at least not indefinitely. This type of person appears to be crying for help as if saying, beg me to stay so I can feel needed.
As is frequently said here, when someone leaves, they are most often quickly forgotten or just remembered for their outrageous posts of aberrant behavior.