Yes, I love it when someone else edits my work. Yes, I love when someone tells me what I did wrong, and I love trying to fix things.
It will always be depressing when I get work back and see the edits in the triple-digits. Especially when most of the mistakes are stupid and seem like they are things I would NEVER do wrong. Examples are using the wrong “there/their”, switching affect and effect, and missing commas.
Yes, it was a “book” that I wrote in a week. Yes, it was under 500 edits in a manuscript that was well over 15000 words long. I mean, with all of these considerations, it is amazing that there were so few mistakes. Yet, I felt my soul cry a bit with every red-mark that I located.
On the plus side: only 3 comments were made towards content. They were good points, and my logic behind the mistakes was horribly flawed. The other saving grace was that I noticed the mistakes as soon as I read over the sentence. I cannot decide whether that is because I am a much better writer, or because I have no read the material for so long.
My eventual point is that, if you can, get someone else to edit your work. Especially because, in my case, over 50% of the mistakes were words spelt correctly, and the grammar was sound enough to be ignored by spellcheck.