I agree with the idea that time only exists inside of it`s own environment, however I belive that time out of many dimensions that earth exists in is the most complex in our eyes. All creatures on earth live and die with time, the question is that the most complex to earth can be the most basic and arbitrary to another.
I agree that the universe has no ending or beginning, beginning and end is another demension in which earth exists in.
Another question that raises the mind, if we only exist in these simple dimensions could more demensionaly advanced creatures be coexisting with us aware of our every move and us not of them? I am a sain boy do not get me in the wrong sence, however one does ask the question?
I have a profound respect for physics, so many questions to be asked, worlds to be discovered, However we must all realize that the universe itself may be working on multiple dimsions, and on multiple levels that earth and it`s one point of view cannot possbly fathom as of now.