in the Bible it’s very clear that all that stuff will happen... and that these things are necessary for Christ’s ultimate victory over Death and Evil. So why would you try to prevent the rise of the Antichrist? In the “best case” you’re just kicking the can down the road and delaying the Return of Jesus a little.

You've put a lot more thought and consideration into it than these folks. That's why they're all "this bad, that bad, oh no Anti-Christ!"

To be fair, the end times isn't likely to be good for most. God's people for salvation number only a few:

Revelation 7:4 - Then I heard the number of those who were sealed: 144,000 from all the tribes of Israel.

That ain't much. There are billions of people on the planet. At the end, the Christian God will only protect a small number from the events of the end times. The rest of us will have to just suck it up and live and suffer through the apocalypse, as it were.

I'm not a believer so I can only guess. But my guess is, despite being "Christian" (in really big finger quotes), I think deep down, a lot of these folks know they are Hell-bound (according to their own system of belief), or at the very least, hell-on-Earth-bound. They're far from Christ-like in their behavior and existence, and I can't see why they'd be among the chosen few of God's protection in the end days. Especially since many of them aren't Jewish, and actively despise Jews (despite also supporting Israel? I dunno, these people confuse the hell out of me). So postponing the end serves to postpone their own damnation.