How about Steem Coins? lol.
Bitcoin and other crypto-currency is the way to go if you want to guard your privacy, stay anonymous, and all that kind of hacker type stuff. That being said, I've noticed this new trend where the Main Stream Media is trying to lure investors into putting their funds into bitcoin. That sounds like a pitfall in terms of Ponzi schemes, embezzling of funds, and large scale currency manipulation.
If you want to invest, I'd say, just use USD. If you want to stay off the radar regarding this or that commercial transaction: then Bitcoin or other crypto is the best bet!