The vast majority of people who study Bible Prophecy believe in a Pre-Tribulation Rapture and they aren't in any kind of cult because of their beliefs. I realize there are some with other views, but I don't plan to debate it. Many books have been written on this subject, and each person is welcome to believe what they want to. Trying to label someone a cult because they believe in a Pre-Tribulation Rapture is wrong and uncalled for. I could just as easily label those who believe in a Post-Tribulation Rapture a cult, but I won't stoop that low and don't believe it. I'll just say that they are welcome to their views and our differences should not hinder fellowship.
The Tribulation Period was determined against Israel - NOT the Church which is the Body of Christ. The CHURCH was not formed for wrath, rather for Salvation (Escape). Those who believe that the CHURCH and Israel are the same or that the CHURCH replaced Israel are in serious error. The two are separate entities, and God made Promises to each entity that will be fulfilled most perfectly at God's Appointed time. God certainly isn't through with Israel. It's important to note that Daniel knew nothing about the CHURCH which is the Body of Christ because the CHURCH was still a MYSTERY.
Regarding the 1800s invention of the Rapture, that's silly since the Apostle Paul clearly taught it about 2,000 years ago. Read the Scripture again and pay particular attention to the Scripture in Bold:
1 Corinthians 15:50-58 KJV 50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption. 51 Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, 52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. 53 For this corruptible must put on incorruption, and this mortal must put on immortality. 54 So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory. 55 O death, where is thy sting? O grave, where is thy victory? 56 The sting of death is sin; and the strength of sin is the law. 57 But thanks be to God, which giveth us the victory through our Lord Jesus Christ. 58 Therefore, my beloved brethren, be ye stedfast, unmoveable, always abounding in the work of the Lord, forasmuch as ye know that your labour is not in vain in the Lord.
1 Thessalonians 1:9-10 KJV 9 For they themselves shew of us what manner of entering in we had unto you, and how ye turned to God from idols to serve the living and true God; 10 And to wait for his Son from heaven, whom he raised from the dead, even Jesus, which delivered us from the wrath to come.
1 Thessalonians 4:13-18 KJV 13 But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope. 14 For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him. 15 For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep. 16 For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first: 17 Then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord. 18 Wherefore comfort one another with these words.
1 Thessalonians 5:9-11 KJV 9 For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ, 10 Who died for us, that, whether we wake or sleep, we should live together with him. 11 Wherefore comfort yourselves together, and edify one another, even as also ye do.
I have no problem with others having different views, but I do have a problem with those who call names for those having a different view. I think that's very childish. Yes, I strongly believe in a Pre-Tribulation Rapture, but I have no problem with folks believing in a Mid, Pre-Wrath, or Post-Tribulation Rapture. I certainly won't be calling them names or hinting that they're in a cult because of their beliefs.