I would think that the under 35 crowd are still getting their life together and or tenting it. An RV of any type is basically another car payment/mait/storage. and if its a TT then you need the gas hog vehicle.
We tented and used OLD SMALL RVs til 30ish then pop up until 35 now TT.
__________________ A rainy day camping is better than any sunny day at work
2004 F250 V10 SD Xcab 2011 Wildwood T26BHXL