The day Apollo announced it would be shutting down for sure (I believe it was June 8th), that was the day I deleted my 11 year old account as well as any content I had contributed to Reddit.
Unfortunately, I did not have the foresight to anticipate Reddit rolling back deleted comments, so I have no idea if my comment history has since been restored without my permission.
I quit on the 8th when Apollo formally announced its shutdown.
I will say that since KBin has a lot less content, I have been spending more time reading books in my backlog and generally being more productive, so quitting Reddit has been a net positive in my life.
However, there are still times I click on Reddit links from Google. Old habits.