I wrote out a response to your question and it will not let me post it. I've tried over and over again and it simply will not let me. Study Luke 17, 20-37. Those that are taken first are taken to die, in Jesus Christ's own words. That's why these verses are important. Can you not see that? What if the pre tribulation rapture is false doctrine setting people up into thinking they are being raptured when they are actually being taken to their deaths? Can you seriously not see how this could be a problem?