No. I am not much afflicted with gear lust, I doubt I even know all the tricks hidden in my four year old m43 camera. I haven't bought a lens in years but there is a lens I'd like to have so I don't rule out that I might buy another. I'm more interested in seeing what I can find to do with what I have that I haven't thought of before. I'd also rather spend discretionary money on travel than gear.
Photography is a hobby than encompasses several sub hobbies. There are those whose primary interest is the equipment, those whose primary interest is the activity of shooting (kinda like hunting), those who are primarily interested in the final image, those who are interested in what they can do with the pixels they gather in post. Most of us have a bit of mix of these interests but we lean towards one or two. Whichever sub hobby we most relate to will determine what our frustrations and unhappinesses derive from. Mine comes from lack of creative ideas, and snazzy new cameras and lenses wouldn't solve that.