Many of these currencies are still a mystery to me and they mainly seem like you are really gambling when investing in some of them. At least STEEM is a tangible currency to me since there are many things you can do to improve your ROI unlike many of the other currencies. One of the best things to do with STEEM is to post great content and find great content to curate and of course there is the delegation option to great projects on the Blockchain. There's not much else to do with most of the other currencies other than hope you bought low enough and hope you sell at the top. To me that's gambling and kinda boring. I like being able to use my STEEM/STEEM Power to grow in many ways as opposed to being at the Mercy of the markets. Best of all earning STEEM is FREE so the ROI on ZERO invested is infinite whereas you can experience "REAL" losses when BUYING the other currencies. As far as I'm concerned, it's all GRAVY on STEEMIT !