Knowing that your replaceable is the worst feeling. It proves that you were never needed, nor wanted, and that your absence wouldn't be a burden to anyone. That you aren't one of a kind. In fact, there are multiple different versions of you that are far better. You didn't leave a trace on anyone, and all that remains of your existence is a blur in a memory because you were only temporary for them. That even if someone cared, they would move on in a week, month, or year? All your efforts and attempts were wasted, no matter what you do, they still move on to someone better and leave you behind yet again. They never truly appreciated you to the amount that you did them, and mourning the loss of you would be pointless when you never really mattered to them in the first place.
