Not sure if it ended there, based on this chart, but maybe o.p. didn't find apartment living to be a significant enough life event to put down?

They weren't homeless then?

The last homeless mark is when o.p. was 25. Rotator cuff surgery happened when they were 45, and the following year they bought their first house.

They have the years written underneath, o.p. should have been 45 during the rotator cuff surgery.