I don't think now the big trading and exchanger platform will be hacked again. And these days gambling sites are also putting bigger percentage of bitcoin in cold storage to make it safe. I worry if another such thing like hacking or split happens again bitcoin price will be like half than what it is today. We need more new buyers to pump up the price.
Some more bitcoin websites will be hacked, I don't have any doubt. But as we move towards regulated exchanges/services this stuff will be less frequent.