When you study carefully the alt coins on the different exchanges and read into them, you can make some huge profits. But
I only use a small amount of bitcoins to trade. The majority is in cold storage as a long term investment, at least until the
next halving in 2020
That was a smart decision to have majority of bitcoin in cold storage and use only a bit of it as we know that the value of bitcoin will reach a new level in couple of years so investing a small amount of bitcoin into trading then making a capital out of it will be a good decision as well.