There are utilities that will scan a live database to pick up schema information and use it to generate hibernate files, including object model class files, with or without annotations. Take a look at the Hibernate Tools. You'll even find
IDE plugins that can help.
The secret of how to be miserable is to constantly expect things are going to happen the way that they are "supposed" to happen.
You can have faith, which carries the understanding that you may be disappointed. Then there's being a willfully-blind idiot, which virtually guarantees it.