I was confused when I read your topic title and thought you were replacing Bitcoin with something else. But upon reading your post, I realised you are referring to holding Bitcoin. In a short word, we should know to invest in Bitcoin that you can afford to lose. It doesn't really mean you have to lose; it does mean you might need to hold for longer to get profits as well, though anything could happen in the crypto market anytime. You should invest in Bitcoin from your savings, so you don't have to touch your Bitcoin for your life. Emergency situations are different issues; we can't predict them.

However, we always prefer to follow the DCA strategy to acquire Bitcoin. So you don't need to invest a big amount at a time. That's how you can build your Bitcoin portfolio, and your personal savings for emergencies will be safe as well. You should have a target for your Bitcoin sales; without a goal, you can't make profits.