Like I said....most gamers leave 5E after a time....no never game again. But there is always enough of an flow of new gamers in to replace them.
While there has always been a percentage of people that stop playing at a certain point because of busy careers, kids, and other responsibilities, that has nothing to do with 5E. It's certainly far less than what I personally saw with 4E. In fact the retention rate appears to be higher than ever because people are more accepting of the activity as a worthwhile leisure activity.
Unless of course you have something to back up your assertion other than your opinion.