Sometimes mostly Bitcoin investors get carried away and invest aggressively with money meant for one or two of their basic needs, and when the needs arise to use the money for what it was intended for, they sell off their Bitcoin or temper with it just to address that pressing basic needs, and that's a terrible way to invest in Bitcoin, that's why it's mostly emphasize by sir jayjuangee that buying or investing in Bitcoin aggressively is not a bad practice, it's actually a good thing to do especially if you are seriously lacking behind in your accumulation journey, but in any purchase you do, make sure it's within the confinement of your discretionary income, and if you can invest or buy aggressively within your discretionary income, you will be fine.
It's only when you invest outside your discretionary income that their will be problem, so in all we do, we should not invest with money meant for any of  our basic needs because it's like making a chicken your friend, one day you will sure eat it.