I came across a tragic story. The protagonist of the story was looking for an alternative to PayPal in July 2010. He found BTC. At that time, the price of BTC was 10 cents,but no one bought it.Like many unfortunate stories, he put it aside, and then forgot about it until it appeared in the media in 2013.
If he missed out in 2009, but had the opportunity to invest again in 2013, then he should be happy because it was still very much early. As at then, it was being sold for less than a thousand dollars and comparing it with today's price, that's a lot of money. Some persons didn't get back in until 2021, so there shouldn't be any regrets except he has sold off everything.