My fear after the bear market is never be in the state I was in the last bear market; holding so many altcoin into the bear and selling at a massive loss at the price dip. Strategy is to sell at the peak of the market and buy at the low of the market. Another fear is to hold a scam coin, coins that may never get on exchange, delist from exchange and hack on the proect
I think the highest fear of all, which i have also experienced is to keep in coin in my wallet for years without being able to trade it against a value. I have had one of such in the past and an abandoned wallet for that matter. Most of the coins had in them, although were airdrop. I only bought few, mainly on DEX, te then folkdelta. The history of those coins today cannot be traced.