Why This Universe?

Dyson spheres are a popular idea among people who think about this. Have you done has anyone done a search for this or you people have done like infrared surveys and there's no peak. I don't think we've ever observed anything that any substantial fraction of astronomers thought was likely to be a Dyson sphere. But my guess is if you asked astronomers, like do you think Dyson spheres might be something worth looking for? The answer would be overwhelmingly yes.