Obviously the innumerable and interminable experiences of hellish suffering aren't sufficient to get Jesus to return. There seems to be a sense that an Adventist level of holiness has to be reached to actuate the Second Advent. Jimbob7, you imply that Adventist failure is purposeful. 

Yes, it's that simple, but with a psychological twist. There is a sub-conscious realization that holiness is unachievable so it is a convenient cover up for what can't happen under any circumstance. His non arrival is expected. A false aura of hope necessarily preserves the myth on which Adventism was born, indelibly recorded on the Seventh-day logo, "Adventist."

 "Hope" and "soon," are artful reinterpretations, both of which ignore the fact the Adventist self-anointed role of end time directors was a farce. But Seventh-day and Adventist are Siamese twins, inseparable even by Dr. Carson. On separation one dies, the other, Seventh-dayism,  lives as an unattractive orphan, doomed to gloomy homelessness.