Know therefore that there is no god but Allâh
and ask forgiveness for thy sins
and for [the sins of] the men and women who believe:
for Allâh knows how ye move about
and how ye dwell in your homes.
Sura Muhammad (47:19)
ased on tr by Abdullah Yusuf Ali
Are you convinved that Allah is real and your god isn't? Of course not, you can see how ridiculous it is to use a book to try and prove a point like this.
I tell you one thing I would rather believe in God and be wrong than to spend the rest of my life in torment!
(Pascal's Wager by the way).
Would you rather believe in Allah than be wrong and spend eternity in his hell? Of course not, again you can see how ridiculous the argument is.
If you think non believers are 'heartless and cruel and never do right' then you need to meet more people. It's a horrible view to have.
But the bottom line is that you're going to believe no matter what. You want it to be true so much that you can't admit you may be wrong. Whatever works for you. But try to convince others to stop thinking critically, and you're going to be countered by people showing how bad your reasoning is.