Apart from anything its fun. My theory is that currency exchange in Crypto is a really good way to get to know new blockchain technologies. For example this week on Bittrex I discovered Einsteinium, HempCoin, Decentraland (which is like a blockchain open source 2nd Life), Monero, LiteCoin, New Economy Movement (which is a working and trading version of what EOS seems to want to be), and Next Coin. Currently I have a little bit of each plus still 2.5 SteemDollars, plus a tiny bit of Bitcoin.
I'm only playing with the original 110 USD that was created when I transferred my original SteemDollars and for me that's the way to do it, just play hard with 100 or so $ and to learn the system.
Of course there's also the waste of time factor, i.e. I would have made more doing a day's work, but it's a little bit of fun.
Thats awesome, yeah there are so many coins, Im really getting into it, researching and learning about it all, is fun.
Don't worry your not wasting your time, true if you could have made more money for a days work, but think of the education you are getting before this starts to go mainstream and people jump on board! So exciting!