A: A Dyson sphere just millions of solar panels covering a star
B: But why do we need that much energy?
A: To make a black hole bomb
B: WAIT NO
https://youtu.be/ulCdoCfw-bY -- Anon Guest
Ever since Nikola Tesla accidentally invented radio, Humanity has been obsessed with transmitting energy without using some form of wire between points A and B. The instant they had the means, they switched to becoming obsessed with gathering as much energy as possible. Most species were sated with enough to deal with every obstacle, but Humanity loved having more.
Deathworlders tend to be instinctually in need of having enough to deal with every possible misfortune and at minimum two of the impossible ones at the same time. Most roll their eyes, muttering about Deathworlder contingency plans under their collective breaths. Some rare few dare to ask questions.
The star the Humans were building around had no planets, so logically there was no reason to be building there. It was far from the usual shipping lanes. Yet the Humans were installing top-of-the-line solar panelling at a safe distance from the surface of the star. What separated this stellar body from literally millions of others like it was that it was a slow-burning star with a lifetime measured in billions of eons. It was only natural that curiosity won out over caution.