We need teams of people working on decentralizing any important information sources like this, with mirrors and open protocols that don’t have single points of failure
Is that sarcastic? arXiv is legal and mainstream, used by professionals; sci-hub is illegal.
The simple reason was that I got conditioned to doing that because the login wall to doing it legitimately was often too painful. At a certain point my workflow switched to checking scihub first, then going the legal path if scihub failed.
It saves a lot of time, and I suspect it is a lot more common than most people think.