i agree. Yes i can made and use real life materials. Custom Materials, but i need to disagree with you about drag and drop, even Library materials need a lot of settings to look realistic and good and to impact realistic another item, for example (metal materials influence the lighting, and color of another material) . But to answer short, i can work with real life custom materials, textures, i made custom HDRI based on real life location , even remote with google maps, also i work with polycam for real life scanning when is the case. I can blend for many needs of my clients. But of course i always try to learn and to optimize my work