Our Existence and Purpose In That Existence, Is This Limited in The Aspects We Know As Life Today?

"Is our existence limited to past, present, and future times, or is our existence all encompassed in one single point in time, the now?  We hold many aspects in perspective, all which allow the complexities and polarities within this life experience.  Why are we to experience, other than to gain complexity in our beings, and evolve energetic to allow for greater energetic expansion and effect."