Why didn't God make us all perfect?

     I've been thinking about it for a while, and a few people at school asked me,  "If god IS out there then why didn't he make us all perfect so that this world would hold no crime?"  I thought about it for a minute and I replied,  "God created us with a 'free-will'  to choose our paths, either good or evil."  Someone else piped up and said,  "Well, say he has the power.  Why didn't he make us perfect? You know. like, not give us free-will?" I thought, then said, "Pretend your god for a moment and pretend that you created these people all the same and you made them to love and worship you.  What is the glory and power in forcing are instilling robotic actions in those who worship you?  I say that God gave us free-will so that we could worship him on our own accord and their is so much more glory in a person that worships you because they love you and not because they are made to.  God created us with free will."  There the debate ended.  What do you think?