I have spent more btc than I have earned.Bitcoin gave me the convenience to move funds easily and I never felt the need to hold it but recent price hike changed my opinion and now I have started to hold bitcoin for future.
It is very wise decision if you are planning to keep bitcoins in your wallet for future purpose. Bitcoins are speedily increasing in price and they are likely to be at 5k dollars by the end of this year. If you are not holding bitcoins at now, grab them as soon as possible. Bitcoins are best for long term investments.