Another reason is that you're making a choice for them.

We think we like more choices, but it's generally proven that having less makes it easier to decide.

One path is: "fuck sake, I need to review all of this and make an informed decision". The other is: "If I have time I'll check it otherwise who cares".

There's another benefit in the change of tone: you're preserving their authority, while at the same time making things easier.