I'm a Christian because well, He saved us! The least we can do is follow Him. And how did I know that He saved us? Faith. Faith that when we die, we don't just disappear forever, instead, we will go to heaven. (or hell, but I wanna go to heaven). It takes time to believe, but it's the way you can just talk to God about anything, and He won't talk to you back directly, but He'll show you a sign. And though your life may suck, just remember it happens for a reason. Jesus died for us, and yeah, His life must have sucked at that time, but he resurrected.
I learned all of this because I was raised to believe in God. And also because gradually, I learned to love Him.