I have had two very good editors over the past few years, who have affirmed as well as criticized. What I am about to say is absolutely no reflection on them.
Let me assure you–getting your manuscript edited is a mammoth, huge, colossal undertaking. It is necessary to listen to someone who will point out all the mistakes in your precious story and disagree with you on how to say things. What I have found through first-hand scientific research is that THIS IS NOT EASY.
However, it makes the story better, which is good for the readers. I love writing but I don’t write for me–I write for my readers. So what makes the story better for them is more important than anything else. Plus, it could possibly be said that a little humbling is maybe good for me. 🙂