Shutting down NYPL on Sunday is almost akin to shutting down homeless and rec centers on Sunday. It only hurts the disenfranchised who need the shelter and resources the most.
Personally I hate the fact that libraries have become de facto homeless shelters. It gives them a constant background noise of danger and a lot of these people just sit around watching softcore porn on youtube. I think you'd see more library attendance if the places felt safer to leave kids at alone
To me a library is a public service that should serve all. To this day, after a decade living here, I've yet to find a cafe, bar, or any place to get free internet, a laptop, shelter, and a decently maintained public bathroom.
I just want to reiterate I agree with your frustration. I want the NYPL to be better, but it needs to serve everybody.