Of course, we should still train general life autonomy, and not promote being able-but-incapable shut-ins, but being able to venture into housing (or back out of it if things go really pear-shaped) should be done flexibly. The family unit as a reciprocating life cushion is a very positive thing to maintain. If you're on the receiving end of this cushion, make sure you're doing your part for your parents and/or extended household, too.
I don't care that economists and real estate investors bemoan the shrinking population of those able to buy houses. When times are financially tough, people need to pool together, not overextend themselves. Overall statistics about economic recovery also don't evenly represent all families.