We love our testers here, but then many of us remember what it was like before we had them. It is oh so much better to have testers find problems than to have the client find them after you have gone to production. There is not a developer alive who hasn't created a bug or misinterpreted a requirement.
The key is to treat all professionals with politeness and respect whether they do what you do or not. Once you start thinking your job is better or more important than theirs then you have lost.
Based on this question: http://programmers.stackexchange.com/questions/93245/software-testing-techniquesSoftware Testing Techniques or Categories I suspect you need an attitude adjustment towards testers and testing in general.