I'm amused to see so much discussion of
Claymore in a thread looking for anime without women!
I don't read manga, so I never cared about the supposed "bad adaptation" complaints from manga readers. The ending resolves a few story threads and leaves the rest on the table. I'm guessing Madhouse hoped (expected?) that
Claymore would continue on for additional seasons, but it never garnered enough viewers or DVD sales to justify that.
My experience here is that every manga adaptation generally brings out a chorus of complaints; my advice is to ignore them and make up your own mind based on what what you see on the screen. (You need only scan the current thread for
Vampire Bund to see this process in action.)