"Do not store your coins on exchanges!" YES
BUT - That goes only for centralized exchanges like Poloniex or Kraken etc.

Personally I only use my very own decentralized exchange wallet.
This way I can safely store, trade, send and backup my coins as easy as using my e-mail client.
And that is something I can only recommend everyone to try out, it's free.

But keep in mind: Once you are in full control of your coins, you are also responsible to secure them by yourself. Always use a password manager (like http://keepass.info) and backup your stuff.

Steemit BitShares channel: https://steemit.com/trending/bitshares