You have sold nothing along the way? Not saying your hodl philosophy is wrong however i can totally understand why someone would sell what they have mined. The story could end at much lower prices too. Again not saying that will happen but it could happen.
Not a penny of it. Selling to cover monthly mining expenses is normal, but if you are converting everything to fiat right away you are robbing yourself of so much money. Thats why Isay if you are selling it all off you are doing it wrong. Always mine for the future.
That's the way I look at it. I took some profit when btc was around 15k. Enough to cover electricity costs for a few months. Eventually I'll take some profit to cover the cost of my gpu rigs, because at some point I would like to have that back in my savings account in fiat, but for now I'm holding out to see what happens over the next several months. If we see a huge spike as in double or triple current prices, I'll pull out enough to cover the cost of my mining rigs.
People who use credit cards or borrow fiat from sources that they shouldn't to fund a mining operation or to directly invest in a coin are the ones losing sleep over a bear market and the daily value of their crypto portfolio. It would piss me off if it all went to zero tomorrow and I lose, but I won't be in debt, because of it, if that were to happen.
You haven't lost anything until you sell at a loss.