Shared by GOLDBUFFALO Don't forget too that keeping your coins in a local wallet benefits you on a hard fork. For example, the upcoming ETC Magneto hard fork. When the coin forks you have to wait until the exchange has settled all of its wallets. That means your coins are untradeable during that downtime. Whereas if you have coins on your local wallet, once your wallet is updated you can go ahead and start trading once their the miners have reached consensus. Sometimes exchanges can take days and that is usually when a coin runs hot and heavy. If you have coins on an exchange, all you can do is watch!