I believe in God because of all the things He has done in my life. He walked with me through my troubles and sheltered me under His wings. His love comforts and brings all good things in my life. I believe in God because when I turn away from Him my life no longer has meaning and all I see is darkness. The things of this world pale against the promise of Heaven. Can you image a world without suffering and confusion and death? Where everyone is perfect?
If you did not believe in God then what do you believe in? what do you trust? yourself your own strength, false idols, other people, money? they all are faulty and will fail you. God has never failed me or told me He's too busy to listen to my prayers, come back later. I believe in God because He places a melody in my heart that sings when I walk the path I'm meant to but when I hurt someone through carelessness or intention, the song stops and I freeze because that means God is no longer with me. If I look around and think about it I realize who and how I hurt someone and try my best to make amends. that is how I think about my walk with God and why I believe in Him.
"Now faith is the substance of things hoped for the evidence of things not seen." Hebrew 11 v.1