Actually, most don't have issues. What you have to realize is that you're just going to see more questions/threads about dogs with issues than you are about dogs without issues. Like...there's just no reason for me to post questions about my dog since I don't have any issues with him to ask a question about.
So, in summary, my dog is perfectly healthy with no temperament issues. Hips/elbows tested and good, also GSDCA temperament tested, and working on obedience titles.
CD RE TC HIC 7/10