Each time I ended therapy was pretty normal. I've never had the term "termination" used in relation to my therapy. No real "formal" conclusions, but I didn't need the endings to be a big final conclusion kind of thing.

1st time: I knew it was coming because I was moving. We pretty much worked as normal right until the end. No big ending sessions or anything. Just the last session said our goodbyes. Sad to say goodbye, but it wasn't like I had any choice; I was moving. 35 years later, we still occasionally keep in touch via facebook.

2nd time: He took a new position out of state. I guess we had about a month notice. It was fine. We were more or less at a good stopping place. Again, no big ending sessions or anything; wouldn't have wanted it. 25 years later, we still keep in touch regularly through facebook.

3rd time: I just sort of stopped sessions because I knew I was ready to stop. No "last" session whatsoever; I simply stopped going when I decided to. We continue to keep up through facebook and run into each other fairly regularly since we live in the same town.

Were there loose ends? Life is always a big loose end. I'm okay with nebulousness.
Did I feel abandoned? Not at all, but feelings of abandonment are not an issue for me.