You call yourself a Christian yet you are quick and arrogant to insult a Christian man who is dead who made the -in your calculus- mistake of addressing the end times. Are you familiar with the concept of imminence, as in the gathering to the Lord in the clouds is and has been imminent since Paul wrote of the notion?
I take it that you mean the redoubtable Mr. Miller.
He's a case point. His arrogance (and ignorance) gave American Christianity the Great Disappointment, and held up to ridicule the fundamental Christian tenet of the Eschaton.
The spiritual pride of his followers led them to formulate one of the most bizarre tenets of Christian history - the Sanctuary Doctrine of the SDAs - as a way of clinging to their clearly untenable beliefs. Miller's Great Disappointment also gave us the JWs, 'nuff said.
If there's any arrogance here it belongs to those who invent completely novel doctrines in order to avoid admitting that they were chumped.