It's not just your regret, it's the regret of all the people at that time who knew about Bitcoin and understood it but didn't invest in it. Those who saw Bitcoin at one dollar or five dollars at that time will really regret seeing the price of Bitcoin at 110k dollars today. A coin has pumped millions of times over the evolution of time, yet despite the opportunity and knowledge, they could do nothing. They will have nothing to do in the present, remembering this past, except disappointment and deep regret.

This feeling is common among early crypto users. Many people had little amounts then in the past but did not get to realize the value it would have later. Yet there's no need to have regrets as no body was able to predict the rise of Bitcoin with certainty. What is more important now is learning from experience. One can still make wise investment today, with patience and discipline, rather than remaining on missed opportunities.

This is one of the reasons why bitcoin is very exciting to invest. It started from having no value at all until it surprised us with a life-changing price. So you see, not all coins have turned like that, majority have only ended dead and were not given chances to be known in the crypto market. But bitcoin is very challenging to invest especially for those high-risk takers. Of course, one should know the investment prior to risking your hard-earned money to invest.

For OP, good thing you learned your lesson now, at least you still have a lot of chances to correct your mistakes and deal with bitcoin the right and profitable way.

Now you can regret it because you see on your story how little Bitcoin you mined in 2016 which is now worth $100-$150 and it is showing power of holding long term, which can be more profitable than mining. Nine years forgetting was time when Bitcoin value increased much, and you feel that you have been denied of becoming rich, but good news is that you will get to see value of Bitcoin in 2025, which is still early, and now you have steady job and income to start investing in serious way, and you will have advantage over people who are brand new. So you should start investing with using DCA strategy.

Let me get you very well, the $0.50 you had in your Coinbase wallet as at that 2016 was it in BTC or just fiats? If it was in BTC then it means it must have added in value by now except you don't have access to your Coinbase wallet anymore which i think it's not possible since you can recover your password through email, Coinbase is a CEX so it's possible to recover the wallet. Then if that amount was in fiat it's nothing to worry about since you estimated the profits it would have given you in bitcoins to be around $100 to $150.

Same questions many have asked, and same regrets but saying that you would have been rich today you should also ask yourself if you would have been so patient to keep your bitcoins till now without selling because from 2016 till now is 9 years. Now that you have seen the value of the little amounts you would have kept in bitcoins if you did invested in 2016, can you make the decision of investing now and see what the price would be in the next 9 years. Seems to be difficult now right? the price is extremely crazy right now but that doesn't mean you should not invest because it's better to save your money in bitcoins than to save in fiats.

Many underestimated Bitcoin's potential. Although initial skepticism was common, its success is undeniable. Now, investing and holding presents great opportunities.

Yep, not as big as they were, but still solid ways to go forward in the long term.

I think people will still doubt BTC even in the years to come, but their number will become less and less.

You decided to leave your current position. That's not a bad thing for you to do. In my opinion, both are good things you've done and will do.

When you say that saving your money in Bitcoin instead of a bank will make you rich, you've already started something good, but the perception that you'll get rich is what you should examine further. The goal of investing isn't solely to get rich, as some of those who have invested aren't rich either. When choosing to invest in Bitcoin, don't focus on getting rich. Consider getting rich as a bonus, but invest in Bitcoin to preserve the value of your money.

Investment has risk, that's why all investors must take risk with their investment choices but with Bitcoin, risk is much smaller than altcoins and shitcoins.

Investment has risk factor but by choosing Bitcoin, people reduce risk and they can reduce it more by manage their finance well, and only use their discretionary income partially for investment. With no need of using money in their investment for bills or emergency, they can hold bitcoins a long time, as long as they want, and we know with Bitcoin, a longer holding time, a better profit investors can get.

The ROI chart is an evidence for it.
https://charts.bitbo.io/yearly-roi/

You never keep some money in bitcoin because you never think that bitcoin could grow this much, just like the case of everyone here. Because if we get warned already when bitcoin was still in its earliest days, then everyone must have been rich with bitcoin. However, we never got the chance to make a wild guess and take high risk on it, but its only now when bitcoin price keeps reaching its new all time high that we realize it's certainly something to be taken high risk.

And one more thing, you never forgot, but you chose to disregard bitcoin, and this isn't new for most of us here.