If you give more thought to your gvwr of 6,000 lbs you'll realize that because the tongue weight can vary greatly, as does yours, the gvwr must be the stand-alone, very maximum weight for which the RV was designed. If left off the gvwr, the tongue weight could simply be loaded way, way beyond design spec's by loading up the pass-through and the bed with your wife's 'junk' and your travel necessities.
(Ladies, be kind, please. That was just a little Wednesday morning humor.)