Well ideally bitcoin is a means of investment, but if you really need the money for whatever reason, you have to sell the coins to get some sort of fiat currency back.
Everyone needs money and people are always looking for the best way to earn money the easiest way. I am thankful that bitcoins do really exist and i learn how to earn this currency since it was the mainstream today. We all have the goal to earn money as much as we can do today so bitcoins is the answer for that.