The “death do us part” thing is a tradition, but marriage is a legal status. Not everyone is going to follow that tradition, and surely you wouldn’t argue this ought to bar them from the legal status

They’re supposed to be nice, calming letters but I always found these letters quite panic inducing which makes for a pleasant bit of irony.

Great question! Thankfully somebody is already working on that, and it’s pretty neat.

https://wikipedia.org/wiki/Pleistocene_Park

Here’s a direct link to the video https://www.instagram.com/reel/DD46f6UI46y/