Your reasoning on the issue the Bible's direct command to "abstain" from blood demonstrates your lack of regard for what God wants, preferring to parse the words to suit yourself rather than seek to know God's view.  Your fear of losing your life as a result of obedience to God is contrary to the "whole obligation of man".  That may be OK for you, but it would not be for a Witness.  It would be a pointless argument.

Your conclusion that Witnesses refrain from transfusions because they are told to do so by men also demonstrates your lack of understanding of Witnesses, in spite of your having been one.  All direction we receive is based upon sound reasoning from the Bible.  Even earlier hopes and conclusions were based upon reason and understanding available at that time.  While you may consider these changes to be "terrible decisions", we understand them in a different light.  The Bible said the light would grow brighter and is has.  That would mean it was dimmer before, and it was.