I’m happily married with a kid, and we recently went through the estate planning process. When I brought up IP stuff and digital properties, their advice was pretty much “Hmm… you should pick someone who understands what you’re talking about, get their approval in advance, and then add them as your legacy contacts and document the heck out of everything”. Realistically nobody is going to want my GitHub stuff or anything like that, but I would like my kid to have access to most* of my files after I pass. I am of course excluding the kind of content that “real friends” delete while your body is still warm.