Soundguy, you need to branch out a little if you are always close to Walmart. In the western US there is not a Walmart around every corner. It may be a long drive to even a tiny grocery store. We take trips that last months (and thousands of miles) and need clothes for each season. We eat all of our meals at home and carry a large assortment of dishes, pots, pans, crock pot, everything we need to cook any meal we want. Our parents are all still alive (my mom is 84 and my dad is 88) so we carry all the clothes, shoes, suitcases, etc. we would need to fly off and go to a funeral. I carry lots of tools. We have 2 vacuum cleaners, upright and handheld. Our trailer is our house while we travel. Nothing that we carry is junk and it is there for a reason.
I haven't weighed for a few years, but we carry about 1500 lbs.