In the past ten years of travel to the Balkans, I did the same. Upgraded to full-frame, brought lights, heavy lenses and all the support. The files were gorgeous but the wear-and-tear of travel packing it all and raised eyebrows in customs...
Five years ago, I brought an M43 camera along. Half the size, weight, etc. Image quality as good as my first trip to Balkans. Starting three years ago, the full-frame stayed home and even in my domestic work, a lot is done on the little camera, much with existing lighting.
For me, it's liberating is weight, size, and I'm under the radar when I'm shooting. Few feel threatened by the little camera, they make little noise, but great images. If I need the higher resolution of my full-frame, I put the camera on a tripod and shoot at twice the size of the larger camera.
Besides weight and size, the cameras are less expensive to purchase, as are the lenses. A bonus for the bottom line!
So thinking pragmatically, it's a win-win to downsize and though larger tools and great lighting was fun while it lasted, it's a lot more fun not to have to work for the tools that are supposed to work for us.