I have to say I really do hate that they kill off the women. Now, granted, they kill off plenty of men, too, but it feels like it's more women because the show doesn't have a regular cast member who is female.
I really liked some of the "love interests" especially when they showed them as more than love interests. Jo was so much better once they didn't define her solely around Dean, for example.
I get that the show is about the boys. I appreciate that and I love that part of it. The thing is you don't have to kill everyone to hammer home that point.