Full Preterism - Knee Jerk Reaction
I believe full preterism is a knee jerk reaction to the failed predictions that the Second Coming would occur by 1988, which led to disillusionment when it didn't happen. Hal Lindsey, Southwest Radio Church, and others speculated that that would be the time. They based that on a forty year generation beginning in 1948 (Matthew 24:32-34). Some subtracted seven years for the Tribulation and thought the Rapture would occur in 1981. I know this because I was a futurist in the late 1970s and all the 1980s and converted to full preterist in the early 1990s, and as a result I was backslidden for several years. I now consider myself a partial preterist regarding the Olivet Discourse, and consider full preterism to be a very dangerous doctrine because it destroys the Blessed Hope and gives no incentive to be watchful and live holy. As to the book of Revelation, the historicist view seems to be the most sane position.
I also believe all the date setting and Tribulation speculations have set the stage depicted in II Peter 3:3-4.
"What then? ſhal we ſinne, becauſe we are not vnder the Law, but vnder grace? God forbid."
Romaines vi.15 - 1560 Geneva Bible