I already had a 4WD in my truck when I bought my 5er. On the first trip from the dealer to my home base I needed it. My home base site was in need of a bit of leveling and it was raining when I arrived. The 4WD allowed me to get into the site and level without getting stuck.
The leveling has now been done with fill dirt and gravel, but it is still a bit soft after a rain. The 4WD keeps me from digging it up when coming and going.
Wouldn't be without the 4WD.
2006 GMC 2500HD CCSB 4x4 Duramax/Allison, Titan 52 gallon fuel tank, Prodigy Controller, B&W Companion Hitch
2010 Jayco Designer 35RLTS, Cummins/Onan RV QG 5500 EVAP, Progressive Industries EMS-PT50C, TST Systems 507 TPMS, RV Flex Armor Roof