I don't know Polish but think that this is what you are meaning to say:
It is much easier to do what has been done your whole life. It is much easier to not question things we have been taught since childhood. It is much easier to live when we are not aware of how much suffering our choices make. It is much easier...close your eyes.
I'm not sure what you mean with the insignificant stupid and funny sentence. I think what you might mean to say is:
It can be for some insignificant stupid and even funny reason that we make our choices.
Some may say I'm exaggerating, that what we do doesn't make much sense. But for me, a person who saw injustice and decides to do something about it is a hero. And not just for me...