As we all know, the most famous application of GR and SR is the GPS guidance system, where time dilation can be corrected. But it seemed that everywhere I go, GPS is the only answer to how GR can be used in real life, and to me sounds kind of sad. Are there any other possible real-life applications of GR?
To narrow the discussion, I would like to constrain the answer with the restriction that: any daily life phenomenon which can be explained by GR should be avoided like most of the answers that can be found on this website: https://www.livescience.com/58245-theory-of-relativity-in-real-life.html#:~:text=The%20theory%20explains%20the%20behavior,planet%20Mercury%20in%20its%20orbit.
I want examples that are artificially applied to human technology and would be able to benefit most, if not all, of mankind.
Hopefully, someone here could answer my question.