The Time traveler's wife

This poem has a message!!! plzz read it twice! if you need to but plzz try nto understand it. it is about the movie but it has 2 messaqe

If I was the time traveler's wife
I would be curious to know what it is like
To shift and travel through the history of my life

But I don't want to know how would my partner feel
When I feel the same way, when it's time for me to disappear.
Back in time guarantees me to relive the good moments
But I can't stay, to cure my family from their torments
Up in the future guarantees my all the possibilities
But what if someone else takes my responsibilities?
200 years in the future, I see my grandkids
But on their generation, who will miss me?

500 years after I notice there was no one else
I wonder what happened?
Or is this true, that there is no one else?
If these years are the end of time
I will still not change anything about my life
For I had and still have a good wife
yet on these 500 years I realized something about my life
"I was the only man who was stuck at time"

-------------------- Extra lines for a movie;
How will I survive?
How will I ever meet God?
What if my families were resurrected?
Will time ever time me to that direction?