Because many of us see fit to criticise other countries that actually try to solve problems around the world when we adopt a position of utter moral cowardice; neutrality.That could be said of every country in the world! So why focus on us?
We were happy to trade with Libya when everyone else in the civilised world was severing ties in the 80's. When we were forced to stop we lobbied for years to have the embargo lifted. We are now happy to work for armament companies when we can while we criticise the countries that use those arms.
It's not that we are any worse than other countries but the moral hypocrisy gets to me.