I think you're going to have to prove that, for one, Free Markets actually do lead to those things, and for two, that our current situation is one that could reasonably be called a Free Market.
"Interested in why you think the playing field isn't level"
I think all one has to do is look at places like the inner city, where poverty is common, and where the opportunities are simply not there. And I feel it is extremely defeatist to say "We can't do anything about unfairness". I believe we absolutely can. We just don't seem to want to.