Well, Laura and I have raised six kids, now have eight grandkids and I am sure more on the way.
We have been in the Lifestyle before any of those kids came along.
We are still together and very happy. It works for us.
The OP is right in a way though.
This Lifestyle is NOT for everyone. I would say more people crash and burn in it then last as long as we have. We see many people try this lifestyle to try to "fix" something that is wrong in their life. It never works.
Most are not cut out for this life but for the ones of us that are, it is a great life!
I'll report back in another 30 years and let you know how we are doing!