It is pretty obvious that the public testing realms are a very useful tool for Blizzard in order to determine what exactly the kinks are in the newest content it is going to roll out -- and even a way to gauge popular opinion on new builds, talents, and bosses. However, the PTR seems to only really cater to one sort of personality: a personality that enjoys seeing everything before it is even brand spankin' new, possibly a little broken (or a lot broken, as the case may be).
There have been times when I've been so jazzed about the public testing realms that I've downloaded the server and patches as soon as they are available and jumped right into trying out the freshest raids or quests, and other times, I just don't give a hoot. PTRs are often the lifeblood of up-to-date bloggers and theorycrafters, but for me, it really all depends. Sometimes I like finding bugs; other times, it just doesn't seem worth the hassle.
Do you find yourself lining up to get into the latest quests and raids on the PTR? Hitting the testing dummies? Or is it all something you'd rather digest from the front page of WoW Insider instead and leave the testing to the experts?