I'm afraid it's you who are being irrational Don.

The Democrats undermined Mr Sanders although he had a positive momentum, simply because Mrs Clinton was a creature of the establishment and would do their bidding.
They were much more afraid of Sanders being elected than Mr Trump who they thought was a clown with little real support.
I said many times during the run up to the election
that the Democrats were backing the wrong horse, the horse with too much political baggage.