I read NG for years. As time went on I realized I was reading less and less of it and leaving issues mostly unread but piled up thinking I would get back to them. I mostly never did.
I eventually switched to Smithsonian. I am with J in K on this one, it has a wider range of subject matter. Still, I got to a point with Smithsonian where I wasn't reading enough of it to make it worth paying for so do not get it now. I expect to start up again someday, I still read it at the barbershop for instance.
My 16 yo son said just a couple of days ago that NG was past it. I asked why he thought that but didn't argue with him. His thinking was that their model is old school, not how people get info any more. He got a gift subscription a couple of years ago but doesn't even open the plastic anymore. I open it up and read some but not enough to want a copy in my name.