Beg to differ with you, but it is not. It only becomes advanced study when it takes an Evelyn Woods speed reading course to get through every new and unusual theory that makes its way into the local Christian books store.
The reason why eschatology is hard for most folks is that they overall knowledge of the Bible is so deficient. Eschatology is not special. Its no harder than general theology or soteriology or ecclesiology or any other of the ologies.
The reason that it is so hard for folks is that they believe they must be reading the daily newspaper with their Bible to have an understanding of all these exciting end times events. They are trying to fit a round peg in a square hole. Ill admit thats hard, but that is not what the study of eschatology is all about.
The bottom line of biblical eschatology can be summed up in a few verses, e.g.,
21 Then Martha said to Jesus, "Lord, if You had been here, my brother would not have died. 22 But even now I know that whatever You ask of God, God will give You." 23 Jesus said to her, "Your brother will rise again." 24 Martha said to Him, "I know that he will rise again in the resurrection at the last day." 25 Jesus said to her, "I am the resurrection and the life. He who believes in Me, though he may die, he shall live. 26 And whoever lives and believes in Me shall never die. Do you believe this?" (John 11)When Israel or antichrist rather than Jesus Christ becomes the focus of all the eschatology talk, you know you have a problem.
21 Then Martha said to Jesus, "Lord, if You had been here, my brother would not have died. 22 But even now I know that whatever You ask of God, God will give You." 23 Jesus said to her, "Your brother will rise again." 24 Martha said to Him, "I know that he will rise again in the resurrection at the last day." 25 Jesus said to her, "I am the resurrection and the life. He who believes in Me, though he may die, he shall live. 26 And whoever lives and believes in Me shall never die. Do you believe this?" (John 11)When Israel or antichrist rather than Jesus Christ becomes the focus of all the eschatology talk, you know you have a problem.