I would not "remember" to donate today, but the donators of the past did not just give the fiat value of their donations but they also gave the potential value. Holders at that very early stage certainly had an understanding of Bitcoin and expected that the price of one unit of it was going to be worth a lot, so they held it and supported its forum.
They know there was a chance that $500 or $1,000 will get to $5k or $10k but still donated it either way.
- Jay -
When I joined the forum in 2013, there was optimism regarding the appreciation of Bitcoin, but it was not very common for someone to have the expectation that one day Bitcoin would be worth 60k as it already was. Today this is a little different. Of course, there were certainly some who had this hope, but the value at the time was very low, and therefore it was difficult to predict such an increase.