You don't understand the liberal mindset, to the left Christianity is evil and mutliculturalism is good, they see all issues through that lens. As far as genocide in Kosovo, I don't believe there was one, although there were atrocities on both sides. The West really had other options to improve the situation besides going to war, but US basically stumbled into war through the incompetence and arrogance of the Clinton administration, the war never had popular support here, in fact a lot of prominent people were outraged.
Other options? Surely if we've learned anything from the '90s - and let's look at Rwanda since we can't agree on the Balkans - it is that other options are just a euphemism for talking while people die.
There were European observers in Kosovo, we could've insisted UN or NATO peacekeepers come in to monitor the situation and prevent civilian casualties. Instead Clinton and Albright gave Milosevic an ultimatum they knew he couldn't accept. In fact I've read a couple of reliable sources that they actually insisted NATO troops be allowed anywhere in Serbia, not just Kosovo, but that's so incredible I'm still not sure if I should believe that. And again, Kosovo wasn't Rwanda, there was no genocide, there was a civil war. There was also a civil war in Colombia, with many more thousands of people dying there than in Kosovo, yet we didn't just go and bomb Colombia.
Edit: Clinton also militarily intervened to restore an American hating communist in Haiti, with horrible consequences for Haiti. Sometimes our government just acts completely irrationally.