In all due respect, why is a belief in purgatory not a statement that the "Blood" is not sufficient (which of course It is)? Not asking for a flame, just looking for an honest answer.
My own questions do not lie along that line though ~ rather, now that we know God set up a universe with quantum physics (among other things) in it, why should we worry all that much about why or why not God would admit an "imperfect" soul to Heaven? Like how would He know, eh?! It's pretty obvious these days He's simply not into "perfect forms" and other concepts of the Ancient Greeks.