Christianity....just a story to believe in?

I need someone to make their BEST attempt to convince me of Christianity. I have no answers to where life began, but I have plenty of questions. I want something to believe in, but I have the hardest time seeing Christianity as anything other than something people believe in because it's all they have ever known or because they are afraid not to  due to the fear of hell. I want to believe in something that will guide my life, but I also find it hard to believe Christianity is not just a story people like to believe in because they want to think there is more than this life and are scared to look into anything else. I know there has to be something much bigger than us to have something as complex and amazing as our universe and life and I am very confused as to where it all began and how very minimal our existence is compared to life itself and the entire universe. It's hard to explain, but I just want someone to tell me what made them a Christian and how I can find belief and hope.