Starting from 2010, BTC's average price would be a few cents at most (The article mentions 6 cents per BTC), your $100 investment would now be worth $73.000.000 (BTC value $44.000, with current value of $50.000~ that would now be $82.843.920!)
Even in 2013, that Bitcoin was starting to gain in value (Approximately $600-700 each) your $100 would now be worth $7.800 (valued at $50.000).
What's interesting is that even throughout years 2017-2019 (Which is our very recent past), those $100 which is like a petty amount of investment, would lead to pretty decent profit, from such a petty amount.
Bitcoin was and still is one of the best investments someone could make, I strongly believe that there's still earning/investment potential. Sometimes I am thinking back and wonder what if? What if I had even bought $50 worth of BTC back in 2014, when I registered here, now I'd have a decent amount of money. I wish I had realized the potential back then, but I was too young. It's no time for regrets, we should keep going forward, in an effort to acquire as much knowledge we can, which can lead us to a new earning potential.
Source: https://finance.yahoo.com/news/bitcoin-price-soars-much-100-163535191.html
It depends if ever you managed to hold for that long, then you're probably living your life to the fullest without worrying about money. Moreover, there will always be an earning/investment potential in BTC and other alternative coins as well even though it's a bit pricy to buy now and betting on a promising project as well is a good idea to grow your money.