DK tank active shield vs. Pally/Warrior passive shield

Recently there was some discussion about how shield block is a passive ability vs. the DK blood shield which is an active ability.  Personally I like the fact that BS is something I can use whenever I choose.  Sure shield block is passive and for some that may translate to easy mode.  I admit I lean towards that description.  I'm not slamming warriors or paladins I just think it means they have one less button to push.  It's more a matter of play style, than which may or could be better.

Feel free to take a look over at MMO-Champion and read the discussion for yourself.