December 2017 during the high of highs, I made a huge mistake, I allowed greed and fomo, ignored my gut and bought into NXT because I was chasing Ignis airdrop. The coin has since tanked and I still have not received the airdrop. Nxt is probably 80/90 down.
What is your biggest cryptocurrency mistake???
My biggest mistake was also airdrop related. I sent tokens to smart contracts hoping to be given tokens in return and till date, now over 5 months, I have not received my tokens. Maybe scam it was.