How to convince developers and management to use automated test instead of manual test

Everyone agrees that automated testing is a good thing, we should all write unit tests. We read articles and blogs to keep us up-to-date on what’s going on in the unit test world, so that we can sound cool talking to peers at lunch. But when we really sit down and try to write automated tests or unit tests ourselves – “Naaah, this is waste of time, let’s ask my QA to test it; that’s much more reliable and guaranteed way to test this. What’s the point testing these functions when there are so many other functions that we should unit test first?” Had such moment yourself or with someone else? Read on.