After a while, the cost of the DSLR or CSC (mirrorless) camera body pales in comparison to what you have invested in a collection of professional/luxury grade lenses. The saving grace is that a good lens will still be a good lens twenty years from now, while you're probably going to be coveting a new camera body in five years or so. One great piece of advice that I got from a professional photographer is that the best camera in the world is the one that you have with you. He related that he had gotten paid for many images that he had shot with a beat-up low-end Nikon DSLR, because he carried the camera with him everywhere (e.g.: into the supermarket) and had it handy to capture the shot when the opportunities arose.
i7-8700K, H100i v2, RoG Strix Z370-G Gaming, 16 GiB, RX Vega64, 960Pro SSD, 5TB HDD, Define Mini-C, SS-660XP2, C32HG70, RK-9000BR, MX518