Any time weighing is brought up, IMHO, the answers tend to go from the bizarre, to the amazing to the absurd....it costs less than $10 to weigh your rig. Even less if you have it reweighed. That said, there are many reasons why one would want their rig weighed. Tire pressure is but one factor. A properly loaded rig will handle better, ride better and perform better. Think shocks, axles, brakes etc. Abuse your equipment and eventually it will fail on you, usually at the worst possible moment. Overload your rig...sure, why not...I loved the comment, (paraphrasing)..I weighed my truck and found I was grossly over the GCWR so I'm never going to weigh my rig again...Ignorance is bliss, I guess....or to quote Ron White;
"You can fix a lot of things, but you can't fix stupid".....just sayin.....:S....Dennis