*shrugs* I guess it can be pretty scary reading the Revelation of John by looking at it as pure end-times foretelling, and not looking at the other layers that are also represented in the book itself.
I actually find Revelation to be a superb piece of literature, and a doxology of worship that has some of the most glorious scenes of worship found throughout the entire Bible. I mean, to visualise everything that happens, and to see the book in the context of worship, I would say it rivals the psalms for the majesty of God as represented in the book. I mean, there are the victory hymns and the worship before the throne, and even in the heavenly city coming down out of heaven as the new regime once th regime of Babylon has been finally defeated at last.
Also, if you look at the many Old Testament passages and prophecies that Revelation alludes to, you can tell definitely that there is so much there (especially from Isaiah and Ezekial, but the other Prophets are represented as well). I think even with this alone, and looking at the different things said in their original source would be enough to keep the avid Bible student busy for a very long time.
Also, being Apocalyptic literature as its genre, its imagery is rich with the symbolism as the people would understand it. There is so much there for the sake of interpretation that I fear, unfortunately, that we in our time can not understand with the same clarity that the original audience would have been able to read it in, as we are not an audience in our day who is used to the rich imagery and intense symbolism of apocalypse as a genre (which was common between the Babylonian captivity and the first few centuries of the church). One thing that we can say, though... is that there is a lot of imagery that reminds me a lot of the first Exodus out of Egypt, which would almost make this like a second exodus out of our slavery to sin and wickedness.
And then we have the layer of prophecy (as a direct message/encouragement from God)... And I think this is where it can potentially get scary, depending on which side of the fence you are actually on. See, if you'd look at Revelation as a whole, you'd see the seven letters to the churches of Asia (which did include Christians, because it was written to the church...), and these letters are continually alluded to as the document continues. And really, there are two sides, and two messages. For the loyal to God (but who are poor and facing persecution), we find the exhortation that God is with them, that HE sees their suffering, and that the Good guys (us) will win a great victory in the end. However, it also says that for the brief period of time before the victory, things are going to get worse than they already are, but the church is instructed to not give up hope, but to keep strong, even in the midst of great persecution.
On the other side, we find the rich, "successful" churches that Jesus himself says that he despises, and the message to them is that you are either for HIM or you are against HIM... and by courting the gods of the world, you are really forsaking the true God of the universe... so it is a call to repentance, and to Come out of Babylon (which is traditionally considered the city of sin, or the city of the worldly ways)... And considering that a lot of the Western church would fall into this second category, THAT I find scary, especially when considering the other passages of Judgment, like the sheep and the goats, and even of the account in the Old Testament of God's dealing with Israel (who are an example of those who call themselves God's chosen people, which they are), which is a sobering thought if you think about that... Consider, God calls us to more than just wearing cross pendants and church attendance, and more than even one highly emotional experience at which time you say a prayer... Revelation shows that God is looking for a life of obedience and loyalty to HIM...