It would seem that the Left Behind view became popular during the late 1800's, in part, because it gave seminarians and pastors a 'politically correct' option, allowing them to avoid branding the Pope as Antichrist.
Today’s evangelicals seem to have forgotten the papacy’s abuses that Spurgeon was certain we would never forget:
“Whether it may be traced to want of will or want of inclination on the part of other establishments, it is certain that the Popish Antichrist alone has been able to drink of the overflowing blood-cup filled by familiars and tormentors. Long pampered by the state, she came to be its lord and tyrant, using fire and sword, prison and rack, to work her accursed will. The Inquisition was the masterpiece of infernal craft and malice, and its deeds were far more worthy of fiends than men. If the church of Rome could at this moment change its Ethiopian skin for ever, lay aside its leopard's spots, and become a pure community, ten thousand years of immaculate holiness and self-denying philanthropy could not avail to blot out the remembrance of the enormous crimes with which the Inquisition has loaded it. There is a deep and indelible sentence of damnation written upon the apostate church by avenging justice for its more than infernal cruelties, and the curse is registered in heaven; nor can any pretences to present liberality reverse the condemnation which outraged humanity has pronounced against it; its infamy is engraved in the rock for ever. Centuries of the most liberal policy would not convince mankind that Popery had become tolerant at heart; she wallowed so greedily in oppression, torture, and murder in her palmy days, that the foam of human gore hangs around her wolfish hugs, and men will not believe her to be a gentle lamb, let her bleat as she may. Against her common humanity is up in arms as much as evangelical religion.” (“The Inquisition” by C. H. Spurgeon, from the August 1868 Sword and Trowel magazine)
David