What was the most destructive doctrine of the church?

Gerald made the following comment in an earlier thread.  This is, in his opinion, the most destructive doctrine the church believed?  Do you agree or is there something else even worse?

I would say HWA's most harmful doctrine was his continued proclamation that the Return of Jesus was just around the corner---at most 2-5 years. And not only that, if I just hang on to HWA's coattails, I will be with him, ruling and reigning (quite a few rungs down on the ladder, of course) over the tribes and nations of the world!  

If you really believe in that kind of a promise/declaration, why would there be any incentive to do anything with your current life?

Why buy a house, or have it painted? Why get an education? Why look for a better job? Why plan for your children's education? Why have a savings account or plan for retirement? Why try to help the poor or feed the starving? Why vote, or become aware of political issues? Why do anything to improve the here and now? 

Very soon, it will all be taken care of for you. All you need do is wait, have faith, and presto, you will be part of the ruling class in the World Tomorrow! You may be an ignorant slob today, but in the World Tomorrow, magic will occur and you will become a decision-making, political genius.

The real problem is that this may be (most probably) the only life you will ever have to live. Please, don't waste it believing in the stupidity of false prophecy. You may be squandering the most precious gift you will ever be given. The magical promise from HWA is a cruel and devastating myth. Many generations since Jesus have wasted their entire lives, waiting on the promises of these liars.

There a ton of hurtful HWA doctrines: God will heal, divorce and remarriage, church government, avoid the world, even your unconverted family members, tithing, abusive child-rearing, Holy Days vs. pagan holidays, ministers standing between you and God. It is all pitiful, but prophecy (if you believe it) will steal your life, the only one you have, and give nothing back in return. 

Bulletin: NOBODY KNOWS THE FUTURE. 

Christ has been kept out of the loop on when he is to return

In the grand scheme of the biblical story, Jesus Christ has been sitting in heaven eagerly waiting for his dad to tell him it is time to come to earth.  Apparently his dad is not aware yet either, at least according to Dave Pack. Apparently Jesus Christ did not know about church eras, so he has been receiving some schooling in that matter.

The apostles spoke and wrote as they did, and asked the question they did, because they knew nothing of Church eras. But the greater question we never asked, and that is, did Christ?

Christ is still waiting, and has been waiting for thousands of years. Sixty-five years waiting to find out about Church eras is a kind of a short wait. He said 2,000 years ago, He didn’t know when the Kingdom would begin. He’s still waiting. Now, we could suppose, I guess, at some point along the line the Father told Him…if the Father knows.

 What will happen if you rely upon 

Dave Pack, Bob Thiel, Gerald Weston and Gerald Flurry 

to tell you when Jesus is returning.