Re: 1 BTC = 1 BTC. You only lose if you sell. You're buying inflationary fiat.
Somehow people never say that 1 BTC = 1 BTC when it's the bull market and everyone is fixated on its USD price, but when there's a bear market, we should all forget about USD price 
You are right. On bull market people also start partying because the price looks great, forgetting that they are on profit only if they sell; and most may only sell when the price actually goes down.
During the bull market, people count 1 BTC = how many gold bars, teslas, lambos, boats ... no one cares about the USD.
Sure, Bitcoin will recover and reach new highs, but it doesn't mean that crashes like this one don't matter at all.
Of course, it matters. It matters because it gives an opportunity to new investors to enter the market. Bitcoin may not offer the same opportunity that early investors had, but it still presents an opportunity for everyone to double their investment within a few years. This makes it the best asset on the market today.