The Navi says in the name of Hashem [Yeshaya 53-12]:
For one moment I abandoned you and with great mercy I will gather you in.
Think about it. It has been two thousand years of indescribable suffering. That is called a רגע קטן!! A small moment. So imagine imagine how much incredible mercy we will see when Hashem gathers us in. Imagine Auschwitz - now think of such incredible extreme love and compassion commensurate to our suffering there. WOW!!
We have to hold on tight, never lose hope and know that better days are coming. In the meantime, we have our faith and [if you are reading this] we have our lives....