I agree with OP on this one, the people who panic sell their coins now and didn't hold will end up regretting their actions when the prices of coins recover and go back up and then into the market. If you do not want to be among those then hold on to your coins. You only lose when you sell your coins, you always stand to make profit from your coins if you just be patient and hold.
Actually we can not predict any of coin movement so sell coin in loss position is not always bad and regret.
I am not the one who like sell in loss but learning from experience, we can sell our coin in loss and try to get lower price to buy back to minimize the loss.