Not exactly war, it's a no fly zone which is fully justified
Libya is a complex problem for Europe yes they have plenty of oil, which like it or not we need, but it has been one of the main conduits for illegal immigration from sub Saharan Africa, which has caused great problems in Spain and Italy.
Diplomacy can be a dirty buisiness and sometimes it is best to look the other way, like I said the west needs oil to function, it's your standard of living we are talking about here, and our economic future.
I also do not see a problem with having a democratic government in Libya, one where the oil revenues are spread around the populous, for the amount of oil that is in Libya the population should have the same living standards as the main Gulf countries