voting system cun run on STEEM, exactly like in BTS.
SBD is not useless, since launch thousands of SBD transactions were made between users. I am preaty sure, that if we would exclude transactions to exchanges, then we would find out, that SBD is used more often as real money then STEEM.
Yes but it creates a parasitic behaviour since SBD is dragging away value ,7.5%/year from Steem, andi t's not backed by anything. You cant maintain a peg without actual reserves in dollar.
Its just a fuat currency that is ineficient and siphons away value from the system.
why 7.5%/year?
Go to your wallet and see there, sometimes it's 7% sometimes 7.5% sometimes 8%, I am not sure how the algorithm is working, but it's rought around that number.