...then what is the abomination Christ is referring to?
31: Forces from him shall appear and profane the temple and fortress, and shall take away the continual burnt offering. And they shall set up the abomination that makes desolate.
9 "Then they will deliver you up to tribulation, and put you to death; and you will be hated by all nations for my name's sake.
10: And then many will fall away, and betray one another, and hate one another.
11: And many false prophets will arise and lead many astray.
12: And because wickedness is multiplied, most men's love will grow cold.
13: But he who endures to the end will be saved.
14: And this gospel of the kingdom will be preached throughout the whole world, as a testimony to all nations; and then the end will come.
15: "So when you see the desolating sacrilege spoken of by the prophet Daniel, standing in the holy place (let the reader understand),
16: then let those who are in Judea flee to the mountains;
17: let him who is on the housetop not go down to take what is in his house;
18: and let him who is in the field not turn back to take his mantle.
19: And alas for those who are with child and for those who give suck in those days!
20: Pray that your flight may not be in winter or on a sabbath.
21: For then there will be great tribulation, such as has not been from the beginning of the world until now, no, and never will be.
22: And if those days had not been shortened, no human being would be saved; but for the sake of the elect those days will be shortened.
23: Then if any one says to you, `Lo, here is the Christ!' or `There he is!' do not believe it.
24: For false Christs and false prophets will arise and show great signs and wonders, so as to lead astray, if possible, even the elect.
25: Lo, I have told you beforehand.
26: So, if they say to you, `Lo, he is in the wilderness,' do not go out; if they say, `Lo, he is in the inner rooms,' do not believe it.
27: For as the lightning comes from the east and shines as far as the west, so will be the coming of the Son of man.
28: Wherever the body is, there the eagles will be gathered together.
I'm sure a very detailed case could be made using the language of JP II's Theology of the Body, that something which dramatically severs the relationship between the physical body and God the Father and Creator is an "abomination that makes desolate".
Since we are the branches of the vine, and the living stones of the new temple, what makes us desolate physically serves to reject the life of the Spirit that should be allowed freedom to transform us. And, through the covenant relationship that God set forth "in the beginning" with Adam and Eve - which is also reaffirmed throughout sacred scripture - the Spirit completes the building of the new temple, that same Body of Christ into which we are baptized.
So, what abomination makes our bodies desolate?
Since we are called to become one with Christ - who rebuilt the temple of the Lord's presence in three days - purposefully making the marriage union desolate is an abomination of the first order. It's bad enough that we as a people so easily dismiss the covenant bond necessary for physical union, its worse still for those who have joined in the sacrament of marriage to use artificial contraception. If our bodies are the temples of the Holy Spirit, and our union in marriage a living echo of the love of the Trinity, then to make ourselves desolate is a much worse offense than the pigs slaughtered on the altar by Antiochus Epiphanes.