I don't think I've ever seen a harder missing of a point than this one - the point of writing automated tests is to actually test scenarios that are hard to man

I don't think I've ever seen a harder missing of a point than this one - the point of writing automated tests is to actually test scenarios that are hard to manually test. Don't be hesitant to delete tests that are no longer useful, but if you're not writing automated tests, you're not testing ENORMOUS swaths of your functionality.