Just do the research.. many have been misled and I too had been. You'll find it interesting that even Scofield's notes have been altered after the mid fifties. I believe that if the church fathers who had been much closer to our Lord than those in the last 100 years believed differently than those who interpret scripture as many do today, I would examine scripture. Those that you mention who diligently search scripture are in direct contridiction ... are you saying those who were with the Lord and those who followed are wrong?
Apart from those absolutes (the departure from any of them is heresy), different groups of believers are free to interpret portions of Scripture as directed by the Holy Spirit. Eastern Orthodox Christians worship differently than Southern Baptists who worship differently than Pentecostals who worship differently than Coptics.
Some interpret Scripture from a more dispensationalist view than others. Some tend toward premillinenialism, some are mid-trib, others are post-trib (my pastor says he's pan-trip--it'll all pan out according to God's will). Some believe in the Rapture, others deny any event will take place.
None of these viewpoints are inherently false doctrine, provided they adhere to the absolutes.