What are you working on that you're debugging annotations everyday? I'd say you've made a big mistake if you're doing that/you didn't read the docs and don't understand how to use the attribute.
(Of course you are also free to write C# without any of the built in frameworks and write purely explicit handling and routing)
On the other hand, we write CRUD every day so anything that saves repetition with CRUD is a gain.
I don't debug them every day, but when I do, it takes days for a nasty bug to be worked out.
Yes, they make CRUD stuff very easy and convenient.