Last days revisited

Today was my final day; and it was probably the hardest day I've worked there to date. This time I looked at things from the perspective of the person leaving (whereas before I was the incoming new guy). And its really hard.
It was the first day of my replacement, so there was this massive information transfer from me to him as we went over all sorts of stuff. I tried to impart as much knowledge as I could to him. It turned out okay. I think he got a lot of information, and he's very eager to learn more, so he'll play "sponge" for the first few weeks and soak up all sorts of information.
There was something else today that made it harder than all the others, and oddly enough, it was a feeling of leaving everything behind. As I reviewed how the build process works with my replacement, I saw things from the "other side of the fence" so to speak. And I saw all my contributions, and all the work I've put into it. I've grown used to it, and almost attached to it all, as much as I complain about it.
And the hardest thing of all is to leave the people I worked with. Two of the Linux guys took me out to lunch, and we sat around and shot the shit, and all that fun stuff. Everything grew so familiar, even though we all knew in the back of our minds its temporary. We build such close ties with our tech-mates. After all, we'd spend 40 hours a week together. And there's a real bond that gets developed; sharing "war" stories with each other. For example, one of the guys bought me a two-pound back of Beef Jerky sticks. He'd always keep a bag in his cubicle, and I'd usually stop by for a 11 o'clock snack.
I moved out of my computer, got the new guy all set up gave him my company cell phone, the cubicle keys, and all that stuff. Then I had no place to go.
All day I felt like just running. Leaving. Going. I didn't want to face the end. But I had to stay, because it was my job, right up until the end.
I don't really know what's going on in my head any more, but this is a hell of a lot harder than I ever imagined it to be.