I have such a deep emotional tie to the services I am involved in, and look/prepare for worst case 100% of the time. The simple reason (not really) is that I have been performing tech services for over a decade and have seen/heard most of it. To be honest I still see many new things, but this is off topic.
So in keeping this article to the point and direct, there is only one way to create a safe end of life solution for your data storage, BY DESTROYING IT (then green recycle). Companies and people alike take our environment into consideration more now than in the past with green recycling the massive amounts of e-waste.