Why are altcoin exchanged for btc and not for dollar?
having tons of altcoin is just like having bitcoin. If bitcoin grows, they grow. If bitcoin falls, they fall.
Isn't this pointless? Why not buying and selling alts for dollar?
I don't deal very much with altcoins but as I know it is possible to convert at least Ethereum into dollars and euro through cex.io service. I just know about such opportunity. Try it, maybe it will be helpful.