Bitcoin is money. I would use it to buy something I needed. I don't do this now because bitcoin is highly undervalued and I expect the price of goods to drop in bitcoin terms. The one time I've actually purchased something with bitcoin I went to an exchange, bought the precise amount I needed, and used that. At some point, the value will go up and then I will have no problem exchanging it for whatever I need to live, be happy, etc.

If the price goes parabolic and you exchange it for a life changing amount of fiat money, then I'd say it's a bad trade unless it's simply an intermediary step to buy something else. Anything else is market timing and good luck with that.