Regret seems to be a common theme in Bitcoin.
Even the recipient of the first Bitcoin transaction, Hal Finney, regretted that he stopped CPU mining because the fan was too loud.
After a few days, bitcoin was running pretty stably, so I left it running. Those were the days when difficulty was 1, and you could find blocks with a CPU, not even a GPU. I mined several blocks over the next days. But I turned it off because it made my computer run hot, and the fan noise bothered me. In retrospect, I wish I had kept it up longer, but on the other hand I was extraordinarily lucky to be there at the beginning. It's one of those glass half full half empty things.
Every block he mined at that time with a CPU gave him 50 BTC, which is worth today about 1 million dollars.[1]
It's crazy to think that every time one of those early miners mined a block, which was very frequently, they would get paid an amount that is worth 1 million dollars in 2022. Of course it was worth nothing in 2009, and you couldn't really do much with it other than just move it around. It took months until laszlo managed to buy two pizzas for 10k BTC.
Bitcoin somehow managed to exist. It was really an almost impossible thing, but it managed to do it. Now it's here to stay. Unstoppable.
In terms of price growth, Bitcoin is still very young. For example, today its entire market cap is about US$400 Billion[1], whereas last year alone the IMF printed US$650 Billion out of thin air[2].
The future is still there waiting for you, so don't regret it. Take action today.
[1]:
https://www.coingecko.com/en/coins/bitcoin[2]:
https://www.imf.org/en/News/Articles/2021/07/30/pr21235-imf-governors-approve-a-historic-us-650-billion-sdr-allocation-of-special-drawing-rights