In the scenario in which your computer is forgotten or stolen, it would offer some comfort knowing that the data on the computer is not accessible.
We have a “policy” in our household that everything that has personal data should be encrypted. That is just for cases in which we lose the device or it gets stolen. That makes it a purely financial loss, and not as invasive / uncomfortable.
But on the other hand my household are not average users. So it might not work well for other people.