If you have enough skill and great predictions on altcoins, then trading is the best for you. Sometimes you can earn 20x of your investment.
best investment apart from bitcoin itself is to invest those bitcoins that you have in promising altcoins. Bbut like any other investments it comes with many different,,
I also think it will be a good idea being involved and keep some ethereum. Even here on my country I can see ethereum's popularity, but mostly , they are just faucet users..