Like anything in life, it is a personal decision whether you fade or DA. Everyone has different circumstances. Some have no family that are JW's, so it may make it easier for them to leave and move one. Others have mates, children and elderly parents still in. Some have great relationships with their families, some not so much. When we were still in we hated the judgmental attitudes (it's one of the many reasons we left), so we try not to judge what someone else chooses to do in this case.
We all have our own stories to tell and it is not our place to judge what others do or do not do. We are perfectly content with the decisions we have made, they are OUR decisions. We are happy with that.