My commute ending event is usually arriving at work or arriving home.

Typically if I commute to work I also commute home from work. The main exceptions to that have been a few times I meet my wife somewhere afterwork, which usually means riding to her somewhere and putting my bike in her car, then later going home with her.

The only other exception was when I crashed a few weeks ago on my way to work. I actually finished riding to work, and even as I went to urgent care I thought about riding home or doing a multi-modal commute. In the end I realized I was in to0 much pain and accepted a ride home for me and my bike from a friend.

To date, any minor mechanical issue or flat has been dealt with and I continued on my commute. Hope it continues to be the case. If something is really bad, I have plan B on parts of my commute, though there are a few sections where a break down could mean a long walk.