While I have enjoyed the misinformation in this thread figured I'd point you in the right direction.
http://valk.dancing-mad.com/?page_id=227
This is a list of the parry/block break points. The only thing str is good for is if you are close enough to reach one of these said break points. As anything over them nets you zero gain. It is actually an EHP loss to put points into str over them. This is why the vast majority of pld's are going full vit until BiS gear. There is no way to predict where the points need to be in str with the randomness of drops. Instead we go full VIT so we are not wasting them. In full BiS gear you need 7 points in str (think it was 7 anyway) to reach the next tier.
You would need around 404 str to sustain a 30% block without cd's. So while you may think that putting any points into str is helping you it really isn't. This was theorycrafted to death since beta 3.
