Are you sure that Laszlo Hanyecz would have held his bitcoin beyond $5 - $10 before selling off? Like other OGs who sold early. Most early hodlers won't have their coins up to this time without selling and rebuying. So it won't be a waste of bitcoin if you use it to buy something needful especially when you don't have any other means of sorting your bill.
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Actually no one knows how it would have been wether he would have HODL or sold his Bitcoin at $5 or $10 price like other OGs, but I am just saying out of expirience. I know you are emphasizing on Laszlo case but everyone is not gonna be like Laszlo besides he did that when Bitcoin has no value yet. I believe apart from the fact that he sold some Bitcoin back then, he should have some more that could have  increased over time. But nevertheless if he doesn't, there is no problem because