Here is my take:
Luk 17:26 And as it was in the days of Noe, so shall it be also in the days of the Son of man.
Luk 17:27 They did eat, they drank, they married wives, they were given in marriage, until the day that Noe entered into the ark, and the flood came, and destroyed them all.
Luk 17:28 Likewise also as it was in the days of Lot; they did eat, they drank, they bought, they sold, they planted, they builded;
Luk 17:29 But the same day that Lot went out of Sodom it rained fire and brimstone from heaven, and destroyed them all.
Luk 17:30 Even thus shall it be in the day when the Son of man is revealed.
Luk 17:31 In that day, he which shall be upon the housetop, and his stuff in the house, let him not come down to take it away: and he that is in the field, let him likewise not return back.
Luk 17:32 Remember Lot's wife.
Luk 17:33 Whosoever shall seek to save his life shall lose it; and whosoever shall lose his life shall preserve it.
Luk 17:34 I tell you, in that night there shall be two men in one bed; the one shall be taken, and the other shall be left.
Luk 17:35 Two women shall be grinding together; the one shall be taken, and the other left.
Luk 17:36 Two men shall be in the field; the one shall be taken, and the other left.
Luk 17:37 And they answered and said unto him, Where, Lord? And he said unto them, Wheresoever the body is, thither will the eagles be gathered together.
I believe this whole passage is summarized in Luke's Olivet Discourse in the following verses:
Luk 21:20 And when ye shall see Jerusalem compassed with armies, then know that the desolation thereof is nigh.
Luk 21:21 Then let them which are in Judaea flee to the mountains; and let them which are in the midst of it depart out; and let not them that are in the countries enter there into.
Luk 21:22 For these be the days of vengeance, that all things which are written may be fulfilled.
Luk 21:23 But woe unto them that are with child, and to them that give suck, in those days! for there shall be great distress in the land, and wrath upon this people.
Luk 21:24 And they shall fall by the edge of the sword, and shall be led away captive into all nations: and Jerusalem shall be trodden down of the Gentiles, until the times of the Gentiles be fulfilled.
These are the Jews whom did not believe Christ that stayed in Jerusalem up til the end.
Whereas, the Christians that obey Christ's prophecies in the Olivet Discourse are likened to Lot fleeing Sodom before its destruction, a la Christians will flee Jerusalem before its destruction.
Luk 17:29 But the same day that Lot went out of Sodom it rained fire and brimstone from heaven, and destroyed them all.