I'm not sure I'd say that. Don't underestimate the number of amillennialists.
On your 7 points,
1/ Such an idea is not found in the Bible.
It is found in 1 Thess., John 14, Rev 7, there are others if you really want to look at this.
2/ Jesus refutes it five times;
John 3:13,
John 7:34,
John 8:21-23,
John 17:15,
Revelation 5:10
None of these refute this teaching, these all say we can't get there on our own. You and I are in complete agreement on that.
3/ Unprecedented, why should God remove His people today, when all up until today have been persecuted and martyred.
Well, the first time something happens is in fact, well, the first time. If it happens to be what God is doing, then it's just what God is doing. He said we wouldn't understand His ways. Although personally, to me this seems completely in character.
4/ The prophets have told us what will happen in the end times and how we must endure until the end.
Has God through His prophets told all people that they will have to live to the end of the great tribulation? No, many will die before that, and many have. Not being here because of death, or because of removal, no requirement that every believer be here till the end of that time. And good reason to think that there needs to be some sort of change which this removal would address.
5/ The ongoing dispute of pre, mid, post or anytime rapture, is evidence enough of there being no proper scripture about a 'rapture'.
That people don't agree over a position does not mean that position is wrong. Well, it depends on who you are and what other positions you hold. For instance I'm Trinitarian, but some are Modalist, some are Oneness, then there is "shared essence", something like that. Does that automatically make trinitarianism wrong?
6/ Jesus said that we Christians could be deceived. He was right!
But you can become undeceived in a moment by coming to believe the pre-trib rapture! OK, tongue in cheek, of course! But point made I hope.
7/ Peter said that Satan is prowling around looking who he can devour with his lies and Paul says that people will listen to 'nice' stories, turning away from sound teaching.
See reply to 6/.
Much love!