where does life lead us?

Every person is born destined to travel on a rough road,
life beats our hearts' up repeattedly and yet we still come back for more,
hardships are a fact for many unfortunate people in this world,
people in a constant struggle to stay afloat;
slowly drowning in their own pool of emotions.
if there is a god and he is so holy, then why do some people suffer so?
the world needs balance, i agree with that theory, but for what other reason?
Why are humans wired to feel so many emotions?
why are humans wired to crave so many things in life?
what does life have to offer a person?
Does life even owe a person; for making them hurt so much sometimes?
How do you know when you have fulfilled your destiny?
these are just thoughts based on the fear of walking in the dark everytime I wake up each morning and know i have to face sooner or later: the world.