It's not safe to trade here anymore, after the recent hacking there will be no second chance for this exchange, you can trade your coins here if you cannot find an exchange to your coin but trade immediately then leave, their reputation is badly tarnished because of the hacking incident.
Once being hacked then its normal for its users and spectators to lose interest to trade here anymore but as being said
if your altcoins is mainly traded up only into this place then you wont really have any choice but as long you have sell and converted
then better to get out asap rather than to wait for an another incident.
So stands to reason those users holding coins that are not easily traded elsewhere might stay but those trading top level coins have a wide selection of exchanges to go choose from should they feel unsafe and want to move.
I still think it is much better to hold any coins in his default official wallet. Exchanges are just for trade.
what is your suggestion for coins which is not listed on Binance? what to do in that case?
Many of Altcoins was listed on Cryptopia but not on Binance. For some small communities, Binance have a too high listing fee and Cryptopia have them the opportunity to go on to the market.