Plato and Socrates did such a great job, that quite frankly, there isn't much left to discuss. There really is nothing new under the sun, just someone else saying it a little differently each time.
The fact is, as humans, we have a built-in need for answers. The paradox therein lies. There is one thing for certain: the created will never be able to understand the creator(s) in the body and mind we now exist in.
There are things we question but cannot fathom. The mind can play tricks on us too. There's just so much in the data base, that it's difficult to separate the truth from theory. People generally just want to feel good about themselves. They want to have purpose with a reward. Religion has seriously duped mankind. Life is not about the rewards necessarily. It's about having a good heart and leading a good life not knowing for certain what our end will mean.
I tend to theorize that we are delicate vessels created to be used by souls as they move on different levels of ascention toward divine perfection. They use us to experience living as a human being. In turn we catch a glimpse of a better way to exist, that we just can't quite grasp in this shell, in this level of existence. There is confusion and sadness until we realize we have no control. Perhaps in due time, having come to live our lives in goodness, with love and compassion, we will be granted an existence on a higher plane at some point. Only then will we begin to see the truth of the universe.