I took mine off a week after I found out about the affair and found out she went out with the guy again. It no longer symbolized a marriage for me so it went away. The wife had taken hers off long before and when I noticed I talked to her about it and said things like oh you single now, etc. She put it back on for awhile and then took it off again when I found out about the affair.
Me:39 WW: 39 Kids: 11,8,4 Married: 15 years Together 17 years PA discovered November 2016 Separated living in same house - ended 1/2017 Separated, kids in house, taking turns staying in house