The amount of $ required to move out on your own is far different than when I was young. In my part of the world rent requires not just a job, but a good paying job. Having said all that my wife and I always told our grown children they were welcome to move back any time, our home is still their home. Both have made it very well on their own and out earn both my wife and I!
A slight twist, my oldest wants us to move in with her and her family, very sweet of of her. My wife and I feel very lucky with our two kids.