Many people regret that they did not buy BTC while they first knew about it. For some, they did not sell BTC while they could.

For me, I got MWC & HEX for free from airdrop to BTC HODLers, but dumped them before they peak. I could easily make 10x of my existing BTC, if I held them strong.
What is your Biggest Crypto Regret?There will be alway regret if we look back to past transactions, and wonder that "if only I can come back, I will do this or that, v.v". Forget them, if you were really learned from mistakes or lost in the past, your regret will be less in the future