Uploading your encryption keys up to someone else's machine is not a sensible default

It generally is, because in the vast majority of cases users will not keep a local copy and will lose their data.

Most (though not all) users are looking for encryption to protect their data from a thief who steals their laptop and who could extract their passwords, banking info, etc. Not from the government using a warrant in a criminal investigation.

If you're one of the subset of people worried about the government, you're generally not using default options.