Redzeppelin: "If an entire people are wiped out (their cities and possessions as well), the verdict of "taking" the virgins for wives (which also contradicts the rape interpretation) appears as almost a mercy of sorts (depending upon whether one saw death as more preferable to life married to a Hebrew). Being an unattended woman without the male population of your people around to support/protect you was not a desirable position to be in - even married to a foreigner was preferable to that."
This is pure dementia. According to the account, the entire people were wiped out by those who took their maidchildren into slavery. To justify the slavery on the grounds that the Israelites had already slaughtered their families, destroyed their cities and stolen their goods is utterly nauseating. It would be laughable, except that it is the sort of argument that has been used by the followers of the Book, right up to the present day, to justify all kinds of atrocities. It would be laughable if it did not provide atheists with the perfectly valid attitude - "If that is what god is supposed to be like, then I am glad not to believe in him."
Redzeppelin: "You make a number of assumptions:
1) God had no good reason to doom the Midianites to death (God is unfair)
2) The Midianites did not deserve to die (God is not just)
3) Any killing is bad (context is irrelevant)"
Wrong - I make one assumption, namely that the writer of the account was mistaken or lying in what he said about God.
The Israelites, by their own account, were a wandering horde, as merciless as the people of Genghiz or Tamburlaine, who slaughtered anyone living in lands that they coveted. Read the chapters before the one that was quoted and you will see that the "crime" of the Midianites was simply that they lived in Midian - a rich land that the Israelites wanted. The "war" that you mention as justifying the atrocities was nothing other than a war of conquest by marauding nomads against terrified and peaceful agriculturalists.
The fact that the chroniclers attempted to justify Israelitish depredations by claiming that God told them to do it just, in my view, makes them deluded or hypocritical or pursuing their own religio-political agenda. As I have said, I believe the account (which was not written down until at least three hundred years after the events, see for example
http://www.catholicevangelism.org/bible-dates1.shtml) tells something about the people who carried out the acts, and something about those who wrote the story, but nothing whatever about God.