Look at this youngin, turning 18 in 2016. Enjoy your knees and shoulders while you can.
2009-2010, you hear about this “Bitcoin” thing for the first time. You remember some old fart telling you about it years ago, but you had no idea what they were talking about and assumed they had mental problems. You decide to download it and start mining it, it doesn’t hurt anything. It just uses your CPU to mine them. You let it run and quickly forget about it. Eventually, you get tired of it slowing your computer down. You have a few thousand coins by now, so you shut the miner down and put your wallet somewhere safe. Then you forget all about it, until about 2021…
Agree on the quit, disagree on the insta.
Use the time to apply and interview for a new job. Once you’ve secured a new position, then you quit. Don’t hurt your own finances while you hurt your old company.
And it’s up to you how much notice you give. Worth considering whether to preserve the professional relationships, or torch that bridge.