Just like the finals in college are the transition between the education and the career, this earth life is a transition between pre-mortal and post-mortal life that will point us into the eternities. We are here to have out character tested, character that we all developed to different levels of maturity in the eons of time we spent in pre-mortality. Character can only be truly tested if the absolute proof of the incentive is not given; if it were not so then it would be our lust and greed being demonstrated. True character is only manifest in the face of opposition, for me to be able to "prove" to you beyond the concept of Faith would remove the parameters of the test and we would both fail for the trial would be swallowed up in the pursuit of the sure reward because any animal will do that.
I believe that we are all the children of a living God and not mere animals. For us the parameters of existence are far different than any others in the animal kingdom. To turn away from that reality and responsibility because we do not like the fact that the trial does not provide for temporal proof outside the need for faith and a "personal" relationship with our Heavenly Father is to ignore all that we ARE given. I believe that for most, demanding proof is either a display of ignorance or a convenient excuse and a method for trying to escape the inescapable, to justify failure, and to bury fear.