In my opinion, if God really was all powerful and merciful and all that, he would not let people die unhappy.
He wouldn't let bad things happen to people.
And if it's just a person making another person miserable, why not give the tormentor some reason? A conscience?
"Free will"? Why, though? Why allow such horrid things to happen?
And then, Jesus dies for our sins, yet the last book of the bible... Says that Jesus would return just to punish sinners.
Call me ignorant, I don't get it, I really don't think it makes much sense.
I honestly have had a lot of **** happen in my life, and it made me... agnostic. I'm not sticking claim to atheism, nor theism, because I really don't know what to believe anymore.