The most liberal states with highest taxes, divorce, immortality have the most people living with Mom and Dad. And most of these people are on welfare etc. including men who refuse to work.
The other states are conservatives who have some religion about them.
The liberals are getting ready for next Presidential. Pseudo refugees moslems have been relocated to conservative areas. Liberals paid people to move into ares.
Be careful about generalizations. I know a fair number of people in this age group, some even older who live with their parents because the only other choice is to go on welfare. Many of these are morally decent folks who listened to their elders, went to college, got their degree, only to find themselves deep in debt, the promised "good paying jobs" shipped overseas or become obsolete. Instead, they've taken low wage entry level positions and put their lives on hold; held hostage by debt. Many work at multiple part time jobs completely unrelated to their degree; jobs they could have gotten while still in high school.
A fair number of those I know are traditional Catholics. Some are even married with children, both parents working while grandma watches and home schools the children.
A priest once gave a conference in which he said that a Catholic had no business dating, much less marrying until he could provide a house, not a rental, and a stable job with wages sufficient to enable his wife to stay home. A single Catholic woman should not date a man who could not already provide, or was set up to provide these things in the near future.
I know he meant well, but if Catholics had to meet his standard, there would few to none getting married and no babies.
IMO, American Catholics hold very un-Catholic views of family life. The nuclear family is an Amercanist notion, not at all Catholic. Multi-generational homes were the norm until after WW II.
Sure, there are lazy bums living in their parents' basement, contributing nothing to the household, but in those cases, the parents are as much to blame as the overgrown children for putting up with it.