I like trading but I also think crypto will play a very important role in our lives in the future, so I exchange my profits from trading to fiat, because I do trade like a part-time job, but I also keep some coins for the long term as an investment plan. If everything goes well, I will never need to exchange those coins to fiat, because I will use them to directly do some shopping, pay for good and services as I would with any normal currency.