Not every version... In case of Vista and 7 only Enterprise and Ultimate editions have it and in case of 8/8.1 you need to have Pro or Enterprise edition.
True, but if you need disk encryption you probably use one of those already.
I mean, a normal use case is a corporate laptop used when traveling or similar. Normal home users certainly have no need of it, for them it's just something else that can go wrong and destroy all their data.
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Not every version... In case of Vista and 7 only Enterprise and Ultimate editions have it and in case of 8/8.1 you need to have Pro or Enterprise edition.
True, but if you need disk encryption you probably use one of those already.
I mean, a normal use case is a corporate laptop used when traveling or similar. Normal home users certainly have no need of it, for them it's just something else that can go wrong and destroy all their data.