Except for the fact that it's written in Revelation, where pretty much everything else is symbolic. That's the nature of apocalyptic literature.
"It is these who have not defiled themselves with women, for they are virgins" (Rev. 14:4). So, only men?
The Book of Revelation is tough going for those who try to interpret all the obviously symbolic references in a literal manner. Those who attempt this end up with conclusions that are subjective and inconsistent. For instance, Tim LaHaye and Jerry Jenkins, in the "Left Behind" novels, have a character called Michael Shorosh who is a member of the 144,000, and is portrayed as having a wife and children. So, they don't take the part about being virgins literally.
Hal Lindsey speculated that the "locusts" of Revelation 9:3 were actually Cobra helicopters. That's not literal. A helicopter is not a locust - not even close to it.
At Revelation 6:13 we are told that
"the stars of heaven fell unto the earth." If taken literally, this would bring all the action in the book of Revelation to an end right there, so dispensationalist interpreters say that the "stars" are actually just meteors. That's not literal.
What about the woman of Revelation 12:1, wearing the sun and standing on the moon? Anyone care to give us a literal interpretation of that?
Years ago, a dispensationalist prophecy buff showed me a picture of the Italian politician Guiliano Amato, and he told me, "This is the Antichrist." I responded, tongue in cheek, that he could not be the Antichrist because he has only one head, and Revelation 13:1 says the Beast will have 7 heads. He said, "That's not literal." Well, okay - a lot of the symbols in Revelation were never meant to be taken literally. Does anybody believe the Antichrist is going to literally arise out of the sea, and that he will have 7 heads, 10 horns, feet of a bear and the mouth of a lion?