The donations support the family operating the site and without that support the site will disappear so it seems to me imperative to provide younger people a reason to financially support the site.
We boomers are on our way out and right now we are the primary financial support. That can’t and won’t go on forever, obviously.
If nothing changes, this site will probably last until 2030 or so. The youngest Baby Boomer will turn 66 by then. The site will still take in donations but by then, will it be worth the time and effort to run the site? Maybe not. If that's the case, it's been a heck of a run, that's for sure.