Basically the title. I was at my job a long long time. I got sick and tired of not getting a raise or recognition despite putting in a significant amount of extra effort that directly helped grow the company and their bottom line. Decided I deserved better. Found it. Put in my 2 weeks notice. On my last day, we all went to a nearby bar. Boss stopped in just to tell me that he can't stay long because they already hired me replacement, and he has prep work to do.
Yes, I know that they have to fill my position. I just thought it was incredibly shitty for him to walk in, tell me that, and leave immediately after that. I took it as basically telling me I'm replaceable. Because I am. We all are. Don't forget that and don't waste your energy and life for a place that doesn't give a shit about you.