[mystified5016]

Why take the risk? If you remove the drive when decommissioning a machine you now have 100% certainty that there is no possible data leak and it costs nothing but two minutes of labor.

If you care at all about data leaks, there's literally no reason to not destroy decomissioned frives and a lot of very real potential risks in not destroying it.

It may be "nicer" to a hypothetical second user, but you don't care about them and new drives are dirt cheap anyway.