larry you're missing the point. Not everyone has parents able or willing to do that. And your dc clearly aren't in nmw jobs if they've been able to do that, because their upbringing with financially secure, involved parents has given them the chance for that outcome. And not everyone gets those opportunities.
The difference is that in a past generation someone without the advantages and support your dc had/ have, still had a reasonable shot at making it on their own.
I'm only 30's, and had dd young and was skint without support. But even doing that 14yrs ago was a hell of a lot easier than someone needing to move out at 18 now and support themselves. I couldn't get social housing then, but private was still only slightly more expensive at the time and for the most part the cost reflected the nicer house. And I got an accidental ll who prefers a long term tenant to greedy profit.
Now, I'm earning a reasonable salary but couldn't dream of renting a house like mine nearby, let alone in a more upmarket area. My rent would only get a rundown tiny flat with a dodgy ll, and in a much worse area too. Not to mention that the extra housing cost now would have made me sell the car, which round here means you have very limited job opportunities, usually zero hours nmw.
I can recognise it's harder for people only 10/15yrs younger than me, so I think you should be able to acknowledge your own greater opportunities.