The sudden global awakening to bitcoin and altcoin trading has given the exchanges more than they could chew.
The large purchase of bitcoin, Ethereum, Litecoin, dash etc. Now is making transaction handling difficult for exchange sites. Some of them is false to bottled their necks. Some may force close earlier than expected.
More erosion of traders are coming in 2018. Hence the question, where to trade and with what wallet? Decentralized or centralized wallet?
Check out WavesLiteApp on chrome desktop app as sample of decentralized wallet and exchange. Compare it with centralized wallet and exchange such as coinbase, bittrex, binance paxful etc