Translation of letztlich

The poem hints that it will be a meal of brutality. We cannot understand this act of killing, the act of two little animals, we do not understand the 'why' of life and we do not see the power that steers all.
How could I get better in Spanish if I had to eat by myself. Impossible. The next days we always ate together and sat around the table for hours discussing politics and the lives we were living.
I will start working on it next week. You can also have a look at our site and give me some feedbacks. You know Spanish better than I do. so please be patient with our questions. I would really like to help.