But I think holding it for 5–10 years will actually be profitable.
Yes this is long term saving and it will help because bitcoin would have increased more in 5 to 10 years. But it would be good if the coins (I mean bitcoin) can be saved or hold throughout someone's entirely life and let his children still inherit it because bitcoin is an asset of value, its price will continue to increase undoubtedly.
Regarding the use of the funds, I guess it depends on your needs, as everyone has a different perspective. However, one thing for sure is that long-term saving of your bitcoins is the key to achieving value growth on your FIAT or other assets in the future.
It's not just about saving, but also about investing.