What is the ROI on margin trading BTC or any other cryptocurrency for that matter?
This is a dangerous transaction and many people have committed suicide because of losses. This is a gambling game. This game is very popular but it will cause huge damage to your market and capital. When many bets are right, the whales will change the market in another direction so that they can make a profit.
Well your heart and mind must be strong enough to withhold the pressure of loss. In cases when you lose, dont die and dont get worried. Everything comes for your own good. Learn from it.