I leave with the laptop, return days later, and perform no manual intervention to reconnect. It's absolutely brilliant.
I connected to a public Unix server and read news, IRC'ed, IM'ed and such like crazy. Also, without being connected to a Pubnix, IRC and Gopher did it fine, the web with patience, and the same with Gemini (gemini://gemi.dev has been really useful to read news and scrap a 95% of unneeded scripts and trackers from web sites).
Usenet was slow on fetching, but totally readable the next morning, and, better, offline.
GNU screen was released in 1987.
tmux was created in 2007.
I've used mosh a lot but it's just interesting to note it's in the same category as screen and tmux
I basically don't use ssh at all any more for interactive sessions, because I'm sick of a few lost packets on wifi or a weak cell signal dropping my connections and forcing me to start over.
Tmux, I used to use and eventually abandoned. I decided I didn't need two keyboard-based window managers (I use Spectacle on Mac) and the one that was only for shells was the one that could go. I have replaced it with nothing, so far, aside from that I just open more Terminal.app windows now (I also used to use iTerm2, for years, until it dawned on me that I was using exactly nothing in it that's not also provided by Terminal.app, and the latter's got better input latency, so I was suffering an extra installed program and slightly less responsive typing for no reason at all)