I wouldn't buy that sign even if I was a billionaire, because I don't see any significance in it. Yeah a dude held it and it generated some hype in Bitcoin community for a week - so what? In my book that wasn't a significant moment in Bitcoin's history. The fact that it was sold for $1M is just another example that there are Bitcoin whales who sit on large amounts of coins and can easily spend $$ millions on some overpriced stuff.
I wouldn't either buy it.... But it is a thing in my book of significant happening, it made some mainstream visibility and some good meme's etc ... also just the act of doing such thing is cool imho.
What makes some whales spend money the way they do is not that they do have it so much so that they don't know what to do with it but some just care so much about history to the extent that they just want their path or name to be held in history even after they have long gone by doing what other whales that don't give a damn about history wouldn't bother about despite how wealthy they are.
Just as you had rightly said, "
that it's now a thing in your book of significant happenings",
and this is not just you doing this there could be a thousands of others that would have also saved the date as significant too. And probably that was what the buyer of the piece had visioned in mind before taking the step to acquire that sign. And achieving this aim alone could be sufficing to him more than what he would probably sell it for in the future.
You are correct in what you have said. Most rich people work so hard these days to make sure that their children's names are popular in the future. That's why they send them to most of the highest and most popular schools in the world. However, some folks spend money on themselves and their family just to make sure that they get everything they want. And most celebrities today use their influence to sponsor others that are upcoming. From this I wouldn't doubt that most people that invested big money in Bitcoin do it for history to know their name (e.g). For the dude named Lazio who bought pizza for about 10,000 BTC. His name spread all over the world. People that have read some histories know his name.
Re: Buy BTC sold for 16 BTC-1 mil USD
As this is concerned, it's possible for anything to be a NON-FUNGIBLE TOKEN, so maybe the dude who bought the paper with the sum of $1,000,000 didn't know that one million dollars could buy him something that's more valuable than just a piece of paper. IMO, It might be the paper he bought means something to him, but since the paper is not a good store of value it isn't worth such an amount of money, 16 BTC is not just a word, it's something valuable. People that don't have the money are struggling to achieve just 1 BTC (although this is the difference between the rich and the poor).