I agree as you say 'something' had to create the first ever living things wether that is bacteria or whatever. But if that something is a someone, say God then, he too had to be created also. The answer God has always been there does not make sense anymore so than someone telling a creationist that evolution does not make sense. So who or what created God then?
No one will ever know how everything came about in the whole universe. It's not just earth...its everything.