This was real quick, and I was wondering why I didn't pick it up earlier.
This is one of those stories that go a long way with you after it is over. I read it fast, and honestly I can still see the two main characters George and Lennie in my head.
It's a story of constant struggle in life, loneliness, dreams (seen, broken, and killed). We all have a dream of owning that life of contentment and peace, but like Crooks said this world is full of such dreamers but no one ever finds such a place.
We'll be fortunate if we get a chance to live our dreams even for a brief time but the worst thing that can happen is the death of those dreams. And unfortunately death of those dreams is something that we all can relate to.
Peace