$BTC someone explain to me why I lose money if the currency drops by 50% and when it goes back up by 50% the value is not the same, like I have 1 btc that is worth 90k, it drops to I don’t know 60 or 50 and after a while it goes back to 90k, so the value of my 1 btc shouldn’t be 90k. Note: if I had 1 btc I would have already sold it and left haha.